Record(Unix)

MJCET 1604-10-862-007

ASSIGNMENT-1

SHELL PROGRAMMING

#1) Shell script to display the number of lines, words, #characters in each of the text file in given directory

wc /root/mca11/*[root@localhost ~]#ksh wordcount

Output:

Displaying the number of words in the directory 6 8 61 /root/1.c 47 125 1261 /root/anaconda-ks.cfg 4 84 4668 /root/a.out 0 0 0 /root/Desktop 1259 5072 54057 /root/install.log 0 0 0 /root/install.log.syslog 0 0 0 /root/mca1107 4 25 195 /root/scsrun.log 0 0 0 /root/tmp 3 11 66 /root/wcount 1323 5355 60308 total

UNIX PROGRAMMING 1 MCA IInd Year IInd Sem

MJCET 1604-10-862-007

# 2) Shell script to rename all files whose names end #with. .c as .old (For example example.c file should be #renamed as example.old)

rename .c .old *.c

[root@localhost ~]# ls1.c anaconda-ks.cfg Desktop install.log.syslog rename sum.c wcountadd.c a.out install.log mca1107 scsrun.log tmp

[root@localhost ~]#ksh rename

output:

[root@localhost ~]# ls1.old anaconda-ks.cfg Desktop install.log.syslog rename sum.old wcountadd.old a.out install.log mca1107 scsrun.log tmp


MJCET 1604-10-862-007

# 3) Shell script to concat the contents of two files into a destination file

[root@localhost ~]# vi file1print this is the contents of the first file

[root@localhost ~]# vi file2print this is the content of the second file

cat file1 file2 >file3

output:

Print this is the contents of the first fileprint this is the content of the second file


MJCET 1604-10-862-007

# 4) Shell script to print its own name and process id

print The script name is $0print The process id is $$

output:

The script name is 4The process id is 3274


MJCET 1604-10-862-007

#5) Shell script to print date in the order: time: day of #week: day: month: #year

print date in the order:time :day of the week:day:month:yeardate +%T:%A:%d:%B:%y

output:

[root@localhost ~]# ksh 5date in the order:time :day of the week:day:month:year12:46:17:Sunday:27:March:11


MJCET 1604-10-862-007

# 6) Shell script to take any number of filename as #command line arguments and concat them into the #destination file.

for i in $*do cat $i >> tempdonecat temp

output:

[root@localhost ~]# ksh 6 file1 file3 tempprint this is the contents of the first fileprint this is the contents of the first fileprint this is the content of the second fileprint this is the contents of the first fileprint this is the contents of the first fileprint this is the content of the second file


MJCET 1604-10-862-007

# 7) Shell script that takes file names as arguments and #checks if they are files or directories.

for i in $*do if [[ -f $i ]] then print $i is a regular file else if [[ -d $i ]] then print $i is a directory fi fidone

output:

[root@localhost ~]# ksh 7 mca1107 file1mca1107 is a directoryfile1 is a regular file


MJCET 1604-10-862-007

# 8) Shell script to find the exit status of a command

print enter two numbersread num1 num2if(( $num1 > $num2 )) then print if condition is true exit status is $?

else print if condition is false exit status is $?fi

output:

[root@localhost ~]# ksh 8enter two numbers20 07if condition is true exit status is 0


MJCET 1604-10-862-007

# 9) Interactive shell script to copy, remove, rename or link files

select ch in copy remove rename link exitdocase $ch in copy) print enter two file names. read file1 read file2 cp $file1 $file2 print copy completed..contents of file1 copied into file2 ;; remove) print enter the file name to remove. read file6 rm $file6 print file6 has been removed ;; rename) print enter the name of the file to rename original and new read original read new mv $original $new print The file has been renamed ;; link) print enter the names of the file to link read file1 ln $file1 /root/Desktop ;; exit) print Exiting from the menu ;;esacdone


MJCET 1604-10-862-007

# 10) Shell script to make the calendar command interactive

print INTERACTIVE CALENDAR OPTIONSprint 1 For current monthprint 2 For current year print 3 For three months print 4 For the year.x print 5 For the x month of x yearprint 6 To exitprint Enter your choice.read chcase $ch in

1) print current month cal -1 ;;2) print current year cal -y ;;3) print previous, present and next months cal -3 ;;4) print the year for calendar read year cal $year ;;5) print enter a valid month number

read month print enter a valid year number read year cal $month $year ;;6) print Exiting....... ;;

esac


MJCET 1604-10-862-007

# 11) Shell script to find a particular pattern in all files the current directory

print enter the pattern you want to find in all the files of the directory read pattern for i in *do if [[ -f $i ]] then grep $pattern $i fidone

output:

[root@localhost ~]# ksh 11enter the pattern you want to find in all the files of the directorycopyselect ch in copy remove rename link exit copy) print enter two file names. print copy completed..contents of file1 copied into file2 ;;


MJCET 1604-10-862-007

12) Shell script to find out whether an executable file #exists in the given path or not

print enter the file nameread fileif [[ -x $file ]] then print this is exe fileelse print this is not exe filefi

output:

[root@localhost ~]# ksh 12enter the file namea.outthis is exe file


MJCET 1604-10-862-007

# 13) Shell script to change the case from upper to lower #or lower to upper

print enter fileread fileprint "converting all lower to upper case letters"cat $file|tr a-z A-Zprint "converting all upper to lower case letters"cat $file|tr A-Z a-z

OUTPUT:

[root@localhost ~]# ksh 13enter fileabcconverting all lower to upper case lettersTHIS IS KORN SHELLTHIS IS KORN SHELLconverting all upper to lower case lettersthis is korn shellthis is korn shell


MJCET 1604-10-862-007

#14) Shell script to implement calculator case $2 in +) (( res = $1 + $3 )) print $res;; -) (( res = $1 - $3 )) print $res;; x) (( res = $1 * $3 )) print $res;; /) (( res = $1 / $3 )) print $res;; *) print "wrong choice";;esac

output:[root@localhost ~]# ksh 14 1 + 23[root@localhost ~]# ksh 14 2 - 20[root@localhost ~]# ksh 14 2 x 24[root@localhost ~]# ksh 14 2 / 21


MJCET 1604-10-862-007

# 15) Shell script to find out whether a given year is #leap year or not

print enter the yearread yearif (( year%4 == 0 )) then

print leap yearelse

print not a leap yearfi

output:

[root@localhost ~]# ksh 15enter the year1988leap year


MJCET 1604-10-862-007

#16) Shell script to calculate employee salary

print enter the basic salaryread b(( da=$b*0.5 ))(( ta=$b*0.6 ))(( hra=$b*0.8 ))(( it=$b*0.4 ))(( grosssal=da+hra+ta+$b ))(( netsal=grosssal-it ))print gross salary is $netsal

output:

[root@localhost ~]# ksh 16enter the basic salary0700gross salary is 2500


MJCET 1604-10-862-007

#17) Shell script to trap signals

trap 'ls;who' 2while truedo

print CTRL+C to see listing of current directoryprint and the users logged in and finally terminates the programprint

done


MJCET 1604-10-862-007

#18) Shell script accepts two directory names as arguments #and deletes those files in the second directory which are #have names identical to the ones in the first directory

if (( $# == 2 )) thendirecto=$1directt=$2

elseprint enter directory1read directoprint enter directory2read directt

fifor fileinDO in $(ls $directo)do

for fileinDT in $(ls $directt)do

if [[ $fileinDO == $fileinDT ]] thenrm ./$directt/$fileinDT

fidone

done


MJCET 1604-10-862-007

#19) Shell script to display the last ‘n’ line of every #file specified as a cnd line argument,preceded by the #name of the file

nol=$1shiftfor i in $*do

print '<==' $i '==>'tail --lines=$nol $i

done


MJCET 1604-10-862-007

#20) Shell script to find total number of files in #directories and subdirectories"shellprogramming.txt"

if (( $# == 1 )) thendirect=$1

elseprint enter directoryread direct

fi

for files in $(ls $direct)do

if [[ -d $direct/$files ]] thenprint $files $(ls $direct/$files|grep -c '^') files

fidoneprint present directory $(ls $direct|grep -c '^') files


MJCET 1604-10-862-007

#21) Shell script to kill a process by name

Ps#accepting process name and printing its id

print enter name of processread processname

# process list given to grep finds if process exists and #sends it # to cut command to retrieve process id

for i in $(ps -e|grep $processname|cut -f2 -d\ )do kill -9 $idone


MJCET 1604-10-862-007

ASSIGNMENT-2

AWK PROGRAMMING

1.(a) Write a script that prints all input lines.

# Write a script that prints all input lines.

BEGIN {print"\t**Program to display all input lines**"i=0

}{

while(i<FNR){

print $0i++

}}END { print"Number of records " i}

(b) Write an awk command that prints the total number of fields in the file?

[mca1113@localhost Desktop]$ vi marks.dat

mca1101 50 60 40 80 90

mca1102 50 55 99 42 43

mca1103 43 53 55 29 75

mca1104 45 85 64 25 48

mca1105 46 52 17 39 52

mca1106 64 89 75 46 24

mca1107 87 64 28 49 33

mca1108 64 87 15 96 44

mca1109 80 90 87 64 37


MJCET 1604-10-862-007

[mca1113@localhost Desktop]$ vi 1_b.awk

#write an awk script that prints the total number of fields in the file?

#Begin Block BEGIN{ count1=0

i=0count=0

}#Processing Block{ while(i<NF){ count++ i++ } print "Number of Fields in " count1+1 " record are " count count1++}#END BlockEND{ print "Number of records in file = " count1}

}


MJCET 1604-10-862-007

2.(a) Write a script that prints the eighth line

# Write a script that prints the eighth line

BEGIN {print"\tProgram to display 8th line of file\n"i=0

}{

while(i<FNR){

if(i==8){

print"Eight Line is "$i"\n"}i++

}}END {

}

(b) Write an awk script to simulate following shell command CP file1 file2BEGIN{

while((getline x < ARGV[1])>0)print x > ARGV[2]

}


MJCET 1604-10-862-007

3. Create an inventory file for the following data( do not include the column heads, only the data) call it as ch12s3f1Partno Price Quantityonhand Reorderpoint minimumorder

0123 1.23 23 20 200234 2.34 34 50 253456 34.56 56 50 104567 45.67 7 10 55678 6.78 75 75 25 (a) Create a script to prepare an inventory report. The report is to contain the partno, price, Quantity on hand, reorder point, minimum order and order amount. (b)The order amount calculated when the quantity on hand falls below the reorder point (c) Also provide a report heading such as “Inventory Report”, heading for each column and “End of report” message at the end of report. (d) Print the report

Data file: [root@localhost awk]$ cat invntry.dat

100 10 100 250 130101 30 100 50 40102 99 50 20 10

Inventory ReportBEGIN {

print"\t\t*Inventory Report*\n"print"Partno Price Qtyonhand Reorder minorder Orderamount\n"i=0

}{

while(i<FNR){

if($2<$3)amt=$1*$2print $0"\t"amt

i++}

}END {

print"amount "amt}

( C )

BEGIN {print"\t\tInventory Report\n"print"Partno Price Qtyonhand Reorder minorder Orderamount\n"i=0

}{

while(i<FNR)


MJCET 1604-10-862-007

{if($2<$3)

amt=$1*$2print $0"\t"amt

i++}

}END {

print"\t\t End of Report"}

Report

BEGIN {print"\t\t*Inventory Report*\n"print"Partno Price Qtyonhand Reorder minorder Orderamount\n"i=0

}{

while(i<FNR){

amt=$1*$5print $0"\t"amti++

}}END {

print"amount "amt}


MJCET 1604-10-862-007

4. Create a script that sends the contents of message file to everybody who has logged inPreparation: Create a file with a short friendly message and mention that this is a test message that should be discarded by the receiver.Script:Script name: message.scrArguments: one argument, a message fileValidation: (i)Ensure that exactly one argument is entered(ii)Ensure that argument is readable filenameBody Section: Create script that uses awk to create a temporary file containing the usernames of those Users who are logged into the system at this moment. Then send the message contained in the first argument to every logged –in user. Note that a user who has logged in more than once should receive only one messageTesting the Script:1. Test the script with no arguments2. Test the script with two arguments3. Test the script with one argument that is not readable file.4. Test the script with one valid argument You should include yourself in the recipient list. Check to see if you have received the message.

BEGIN{}#Processing Block{# system("write mca1111")

while((getline x < ARGV[1])>0){

print x> system("wall x")}

}

BEGIN{}#Processing Block{# system("write mca1111")

while((getline x < ARGV[1])>0){

print x> system("write mca1104 print x")print x> system ("Hello")

}}


MJCET 1604-10-862-007

ASSIGNMENT-3

PERL PROGRAMMING

1. Write a Perl program that takes a,b,c as input and calculates the value of the expression 10ab-((c-1)/17.44).

#Calculate 10ab-((c-1)/17.44).

print "Enter the value of a ";$a=<STDIN>;

print "Enter the value of b "; $b=<STDIN>;print "Enter the value of c "; $c=<STDIN>;

$res=10*$a*$b-(($c-1)/17.44);print "The result is $res";

output:[root@localhost Ass3]# vi 1.pl[root@localhost Ass3]# perl 1.plenter a value:1enter b value:2enter c value:3the result is: 19.8853211009174


MJCET 1604-10-862-007

2. Write a Perl Program that takes three numbers as input and finds the second largest among them.

system("clear");print "\t\tFind the second largest number among the three numbers \n";print "Enter the first number ";

$a=<stdin>;print "Enter the second number "; $b=<stdin>;print "Enter the third number "; $c=<stdin>;

if($a>$b){if($a>$c){

if($b>$c){print"Second Largest number is $b";

}else{

print"Second Largest number is $c";}

}else{

print"Second Largest number is $a";}

}else{

if($b>$c) {if($a>$c) {

print"Second Largest number is $a";}else {

print"Second Largest number is $c";}

}else{

print"Second Largest number is $b";}

}output:[root@localhost Ass3]# vi 2.pl[root@localhost Ass3]# perl 2.plenter first no:10enter second no:20enter third no:30

The second largest is : 20


MJCET 1604-10-862-007

3. Write a Perl Program to accept names in array and output the names in alphabetical order. Input: Three names, on separate lines from the keyboard. Output: Three Input names in alphabetical order.

@names;print "enter 3 names\n"; for($i=0;$i<3;$i++) { $names[$i]=<STDIN>; } print "the names are: @names\n"; @sortedlist=sort @names; print "the sorted list is: @sortedlist\n";output:[root@localhost Ass3]# perl 3.plenter 3 nameshabeebsirajimtiazthe names are: habeebsirajimtiazthe sorted list is: habeeb imtiaz siraj


MJCET 1604-10-862-007

4. Write a Perl Program that contains a function that takes an array of numbers as parameters.Parameter: An array of numbersReturn value: The average and median of the parameter array.

sub func_average{my @new_arr=@_;foreach $i(@new_arr){

$sum+=$i;$count++;

}$avg = $sum/$count;return $avg;

} sub func_median{

my @arr1= @_;for($j=0;$j<$n-1;$j++){

for($k=$j+1;$k<$n;$k++){if($arr1[$k]>$arr1[$j]){

$temp=$arr1[$k];$arr1[$k]=$arr1[$j];$arr1[$j]=$temp;

}}

}$med = ($arr1[0]+$arr1[$n-1])/2;return $med;

}

$sum=0;print "\n\t Enter the Number of elements\n";$n=<STDIN>;$j=0;while($j<$n){

print "\n Enter the $i Element\t";$arr[$j]=<STDIN>;$j++;

}$avg= func_average(@arr);print "\n\tAverage : $avg\n";$median= func_median(@arr);print "\n\tMedian : $median\n";


MJCET 1604-10-862-007

5. Write a Perl Program that demonstrates string functions.

print "enter two strings\n"; $str1=<STDIN>; $str=<STDIN>; $res=chomp($str,$str1);print"no.of lines are: $res\n"; $len=length($str);print"lengthof the string is: $len\n"; $upp=uc($str);print"upper case letters are: $upp\n"; $low=lc($str);print"lower case letters are: $low\n"; $name="habeeb"; $fullname="mk ".$name;print"concatenation of two string is: $fullname\n"; $j=join($str1, $str, 33);print"joining of two strings with number is: $j\n";

output:[root@localhost habib perl progs]# vi 6.pl[root@localhost habib perl progs]# perl 6.plenter two stringsmk habeebno.of lines are: 2lengthof the string is: 6upper case letters are: HABEEBlower case letters are: habeebconcatenation of two string is: mk habeebjoining of two strings with number is: habeebmk33


MJCET 1604-10-862-007

6. Write a Perl Program that demonstrates the pattern matching capabilities.

print"enter a string\n"; $str=<STDIN>;print"1) It is a dot pattern match:\n"; if($str=~/h.beeb/){ print"\t its got to be habeeb\n"; }else{ print"\tbad luck\n"; }print"2) It is [aei] pattern match:\n"; if($str=~/h[aei]beeb/){

print"\t its got to be habeeb\n";

}else{ print"\tbad luck\n"; }print"3) It is [^aei] pattern match:\n"; if($str=~/h[^aei]beeb/){


}else{ print"\tbad luck\n"; }

print"4) It is beginning of shell pattern match:\n"; if($str=~/^habeeb/){



print"5) It is end of string pattern match:\n";

if($str=~/habeeb$/){




MJCET 1604-10-862-007

output:

[root@localhost habib perl progs]# vi 9.pl[root@localhost habib perl progs]# perl 9.plenter a stringhabeeb1) It is a dot pattern match: its got to be habeeb2) It is [aei] pattern match: its got to be habeeb3) It is [^aei] pattern match: bad luck4) It is beginning of shell pattern match: It’s got to be habeeb5) It is end of string pattern match: It’s got to be habeeb


MJCET 1604-10-862-007

7. Write a Perl program that takes as Input: A file that contains English words, where each word is separated from next word on a line by one space, specified on the command line.Output: A table, in which the first column has the unique words. From the input file and second column has the no. of times the word appeared in the file; no word can appear twice in the table.Method: Your program must use two arrays to store the table, one for the words and for the frequency values.

while (<>){#>>> Split the line into words@line_words = split /[ \.,;:!\?]\s*/;#>>> Loop to count the words (either increment or initialize to 1)foreach $word (@line_words){if (exists $freq{$word}){$freq{$word}++;}else{$freq{$word} = 1;}}}print "\n Word \t\t Frequency \n\n";foreach $word (sort keys %freq){print " $word \t\t $freq{$word} \n";}


MJCET 1604-10-862-007

8. Write a Perl program that takes as Input: A file of lines of employee data where each line has name: age: department code: salaryOutput: 1. The names of all Employees whose names end with “son”2. Percentage of employees under 40 years old.3. Average salary of employees under 40 years old4. An alphabetical list of employees who are under 40 years old and who have salaries more than 40,000

open(EMPLOYEES, "employees.txt") || die "Can't open employees $!";print "Names that end in 'son'\n\n";# Loop to read and process the employee datawhile (<EMPLOYEES>){# Increment the number of employees and chop off the newline$total_employees++;chomp;# Split the input line into its four parts($name, $age, $dept, $salary) = split(/:/);# If the name ends in 'son', print the nameif ($name =~ /son$/){print "$name \n";}# If the employee is under 40, count him or her and add his or her# salary to the sum of such salariesif ($age < 40){$under_40++;$salary_sum += $salary;# If the salary was over 40,000, add the person and his or her# salary to the hash of such peopleif ($salary > 40000){$sublist{$name} = $salary;}}}# If there was at least one employee, continueif ($total_employees > 0){# If there was at least one under 40, continueif ($under_40 > 0){$percent = 100 * $under_40 / $total_employees;print "\nPercent of employees under 40 is: $percent \n";$avg = $salary_sum / $under_40;print "Average salary of employees under 40 is: $avg \n";if (keys(%sublist)){print "Sorted list of employees under 40"," with salaries > \$40,000 \n";


MJCET 1604-10-862-007

@sorted_names = sort (keys(%sublist));print "\nName \t\t Salary\n";foreach $name (@sorted_names){print "$name \t \$$sublist{$name} \n";}}Else{print "There were no employees under 40 whoearned";print "over $40,000 \n";} #** of if (keys(%sublist))}else{print "There were no employees under 40 \n";} #** of if ($under_40 > 0)}else{print "There were no employees\n";} #** of if ($total_employees > 0)


MJCET 1604-10-862-007

9. Write a Perl program that takes as Input: A file of text in which all words are separated by white space or punctuation like comma, a semicolon, a question mark, a period, or a colon. The input file is specified on command line. Output: A list of all unique words in the file in alphabetical order.

#Program to copy the content of a file in an Array and Display it in alphabetical Order@arr;open(INDAT,"<trail");while($a= <INDAT>){

@arr1=split(" ",$a);push(@arr,@arr1);

}@arr= sort(@arr);foreach $i(@arr){

print "\n\t$i";}

Text file

Hello WorldThis is Hello

a


MJCET 1604-10-862-007

ASSIGNMENT - IV

Inter-Process Communication

1. Setup a two-way pipe between parent and child processes in a C program. i.e., both can send and receive messages.

#include"unistd.h"#include"stdio.h"

int main(){

char str[20], str1[20], str2[20];

int arr[2],arr1[2], pid;

pipe(arr);

pipe(arr1);

pid=fork();

if(pid==0){

printf("\n CHILD: Enter a message \n ");

scanf("%str", str);

write(arr[1], str,sizeof(str));

read(arr1[0], str2, sizeof(str2));

printf("\nCHILD\n Message read from parent : %s \n",str2);

}

else{

read(arr[0], str1, 20);printf("\nPARENT:\n Message from the child is %s\n", str1);printf("\nPARENT: Enter a message :\n");scanf("%s", str2);write(arr1[1],str2, sizeof(str2));

}}


MJCET 1604-10-862-007

2. Write 2 programs that will both send and messages and construct the following dialog between them

(Process 1) Sends the message "Are you hearing me?"

(Process 2) Receives the message and replies "Loud and Clear".

(Process 1) Receives the reply and then says "I can hear you too".

//Program to send msg from process1.msg"Are you hearng me"#include<stdio.h>#include<stdlib.h>#include<sys/ipc.h>#include<string.h>

main(){

int pid,p1[2],p2[2],length;char str1[]="Are you hearing me?";char str2[]="loud and clear";char str3[]="yes i can here u to";

pipe(p1);pipe(p2);

pid=fork();

if(pid==0){

close(p1[0]);close(p2[1]);

printf("\n Process-1(cp) sends mesg : %s",str1);

write(p1[1],str1,sizeof(str1));// str2 [50] ="Loud and clear";

read(p2[0] ,str2,sizeof(str2));// str2[strlen(str2)]='\0';

printf("\n Process-1(cp) recieves :%s\n",str2);//sleep(3);wait();printf("\nprocess-1 again sends: %s\n",str3);write(p1[1],str3,sizeof(str3));//wait();

}else

// if(pid==0){ //sleep(5);

close(p1[1]);


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close(p2[0]);

read(p1[0],str1,sizeof(str1));printf("\n process-2(pp) recieves: %s",str1);

// wait(); printf("\n Process-2(pp)sends:%s",str2);

write(p2[1],str2,sizeof(str2));

wait();}

}


MJCET 1604-10-862-007

3. Write a server program and two client programs so that the server can communicate privately to each client individually via a single message queue.

[mca1002@localhost]~/UNIX/Sockets/EchoServer% cat CO_IT_server.c

#include<stdio.h>#include<string.h>#include<errno.h>#include<sys/stat.h>#include<sys/types.h>#include<sys/socket.h>#include<netinet/in.h>void server_service(int newsockfd);main(){

struct sockaddr_in servaddr,cliaddr;int sockfd,newsockfd,port,len,retval,client;char serv[50];printf("ENTER PORT NUMBER");scanf("%d",&port);printf("\nENTER IP ADDRESS");scanf("%s",serv);servaddr.sin_family=AF_INET;servaddr.sin_port=htons(port);servaddr.sin_addr.s_addr=inet_addr(serv);sockfd=socket(AF_INET,SOCK_STREAM,0);if(sockfd==-1)perror("UNABLE TO SOCKET\n");retval=bind(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr));if(retval==-1)perror("UNABLE TO BIND\n");retval=listen(sockfd,2);if(retval==-1)perror("UNABLE TO LISTEN\n");printf("STARTED CONNECTION....\n");while(1){

len=sizeof(cliaddr);newsockfd=accept(sockfd,(struct sockaddr *)&cliaddr,&len);if(newsockfd==-1){ perror("UNABLE TO CONNECT\n"); }client=ntohs(cliaddr.sin_port);printf("\nREADING FROM CLIENT AT PORT : %d",client);server_service(newsockfd);printf("\nSERVICED CLIENT AT PORT : %d\n",client);shutdown(newsockfd,2);

}shutdown(sockfd,2);printf("\nENDED CONNECTION....\n");

}void server_service(int newsockfd){

char str[20];for(;;)


MJCET 1604-10-862-007

{if(read(newsockfd,str,sizeof(str))==-1)perror("UNABLE TO READ FROMCLIENT");if(write(newsockfd,str,sizeof(str))==-1)perror("ERROR WHILE WRITING");if(strcmp(str,"BYE")==0){

return;}

}}

[mca1002@localhost]~/UNIX/Sockets/EchoServer% cat CO_client.c

#include<stdio.h>#include<stdlib.h>#include<errno.h>#include<string.h>#include<sys/types.h>#include<sys/socket.h>#include<netinet/in.h>void client_service(int sockfd);main(){

struct sockaddr_in servaddr;int sockfd,newsockfd,port;char serv[32];printf("ENTER PORT NUMBER : ");scanf("%d",&port);//printf("\nENTER IP ADDRESS : ");//scanf("%s",serv);strcpy(serv,"127.0.0.1");servaddr.sin_family=AF_INET;servaddr.sin_port=htons(port);servaddr.sin_addr.s_addr=inet_addr(serv);if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1){

perror("UNABLE TO SOCKET");exit(0);

}if(connect(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr))!=0){

perror("UNABLE TO CONNECT");exit(0);

}client_service(sockfd);shutdown(sockfd,2);

}

void client_service(int sockfd){

char str[20],msg[20];for(;;)


MJCET 1604-10-862-007

{printf("\nENTER MESSAGE OR \"BYE\" TO EXIT : ");scanf("%s",msg);if(write(sockfd,msg,sizeof(msg))==-1)perror("UNABLE TO WRITE");if(read(sockfd,str,sizeof(str))==-1)perror("UNABLE TO READ");if(strcmp(str,"BYE")==0){

return;}else{

printf("%s\n",str);}

}}

OUTPUT:

SERVER:

[mca1002@localhost]~/UNIX/Sockets/EchoServer% cc CO_IT_server.c [mca1002@localhost]~/UNIX/Sockets/EchoServer% ./a.out ENTER PORT NUMBER5678ENTER IP ADDRESS127.0.0.1

STARTED CONNECTION....

READING FROM CLIENT AT PORT : 41208SERVICED CLIENT AT PORT : 41208


^C

CLIENT 1:

[mca1002@localhost]~/UNIX/Sockets/EchoServer% cc CO_client.c [mca1002@localhost]~/UNIX/Sockets/EchoServer% ./a.out ENTER PORT NUMBER : 5678

ENTER MESSAGE OR "BYE" TO EXIT : hellohello

ENTER MESSAGE OR "BYE" TO EXIT : howhow

ENTER MESSAGE OR "BYE" TO EXIT : areare

ENTER MESSAGE OR "BYE" TO EXIT : you


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youENTER MESSAGE OR "BYE" TO EXIT : byebye

ENTER MESSAGE OR "BYE" TO EXIT : BYE[mca1002@localhost]~/UNIX/Sockets/EchoServer%

CLIENT 2:

[mca1002@localhost]~/UNIX/Sockets/EchoServer% cc CO_client.c [mca1002@localhost]~/UNIX/Sockets/EchoServer% ./a.out ENTER PORT NUMBER : 5678

ENTER MESSAGE OR "BYE" TO EXIT : hellohello

ENTER MESSAGE OR "BYE" TO EXIT : HOW HOW

ENTER MESSAGE OR "BYE" TO EXIT : AREARE

ENTER MESSAGE OR "BYE" TO EXIT : YOUYOU

ENTER MESSAGE OR "BYE" TO EXIT : BYE

[mca1002@localhost]~/UNIX/Sockets/EchoServer%


MJCET 1604-10-862-007

4. Write 2 programs that will communicate both ways (i.e each process can read and write) when run concurrently via semaphores.

WRITER PROCESS. */

#include<stdio.h>#include<stdlib.h>#include<sys/types.h>#include<sys/sem.h>#include<string.h>#include<unistd.h>#include<sys/ipc.h>#include<sys/shm.h>FILE *fp;char ch,text[20];

void down(int semid);void up(int semid);void writer(int resource);int main(int argc,char *argv[]){

int wrt,mutex,shmid,pid1,pid2;struct sembuf s;char value[5];char *msg;

wrt=semget(0x10,1,IPC_CREAT|0666);

mutex=semget(0x11,1,IPC_CREAT|0666);

shmid=shmget((key_t)0x12,10,IPC_CREAT|0666);

if(wrt==-1)perror("SEMAPHORE wrt CREATION PROBLEM!");if(mutex==-1)perror("SEMAPHORE mutex CREATION PROBLEM!");if(shmid==-1)perror("SHARED MEMORY CREATION PROBLEM!");

semctl(wrt,0,SETVAL,1);

semctl(mutex,0,SETVAL,1);

msg=shmat(shmid,0,0);strcpy(value,"0");strcpy(msg,value);shmdt((char *)msg);

while(1){

writer(wrt);sleep(5);

}


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}

void down(int semid){

struct sembuf s;s.sem_num=0;s.sem_op=-1;s.sem_flg=0;semop(semid,&s,1);

}

void up(int semid){

struct sembuf s;s.sem_num=0;s.sem_op=1;s.sem_flg=0;semop(semid,&s,1);

}

void writer(int resource){

down(resource);//wait(wrt)printf("\nWRITER IS ACTIVE\n");fp=fopen("file","w");if(fp==NULL){

perror("CANNOT OPEN FILE");exit(0);

}printf("ENTER SOME TEXT TO BE WRITTEN TO THE FILE\n");gets(text);fputs(text,fp);fclose(fp);printf("WRITER FINISHED WRITING\n");if(strcmp(text,"BYE")==0){

printf("\n\nWRITER ENDING NOW\n");up(resource);//signal(wrt)exit(0);

}up(resource);//signal(wrt)

}

READER PROCESS.#include<stdio.h>#include<stdlib.h>#include<sys/types.h>#include<sys/sem.h>#include<string.h>#include<unistd.h>


MJCET 1604-10-862-007

#include<sys/ipc.h>#include<sys/shm.h>

int readcount=0;FILE *fp;char ch,text[20];

void down(int semid);void up(int semid);void reader(int resource,int mutual,int share);void increment(int *readcount,int shmid);void decrement(int *readcount,int shmid);

int main(int argc,char *argv[]){

int wrt,mutex,shmid;struct sembuf s;char *msg;

wrt=semget(0x10,1,IPC_CREAT|0666);

mutex=semget(0x11,1,IPC_CREAT|0666);

shmid=shmget((key_t)0x12,10,IPC_CREAT|0666);

if(wrt==-1)perror("SEMAPHORE wrt CREATION PROBLEM!");if(mutex==-1)perror("SEMAPHORE mutex CREATION PROBLEM!");if(shmid==-1)perror("SHARED MEMORY CREATION PROBLEM!");

shmdt((char *)msg);

reader(wrt,mutex,shmid);}

void down(int semid){

struct sembuf s;s.sem_num=0;s.sem_op=-1;s.sem_flg=0;semop(semid,&s,1);

}

void up(int semid){

struct sembuf s;s.sem_num=0;s.sem_op=1;s.sem_flg=0;semop(semid,&s,1);

}


MJCET 1604-10-862-007

void reader(int resource,int mutual,int share){

while(1){

int i=0;down(mutual);//wait(mutex)increment(&readcount,share);//readcount++;if(readcount == 1){

down(resource); //wait(wrt)}up(mutual);//signal(mutex)printf("\nREADER IS ACTIVE\n");fp=fopen("file","r");if(fp==NULL){

perror("CANNOT OPEN FILE");exit(0);

}i=0;while((ch=fgetc(fp))!=EOF){

text[i]=ch;i++;

}text[i]='\0';printf("%s",text);fclose(fp);printf("\nREADER FINISHED READING\n");down(mutual);//wait(mutex)decrement(&readcount,share);//readcount--;if(readcount == 0){ up(resource); } //signal(wrt)

if(strcmp(text,"BYE")==0){

up(mutual); //signal(mutex)printf("\n\nREADING ENDING NOW\n");exit(0);

}up(mutual); //signal(mutex)sleep(5);

}}

void increment(int *readcount,int shmid){

int n,rev=0,rem=0,i=0,tempVal;char *msg,value[5];msg=shmat(shmid,0,0);tempVal=atoi(msg);


MJCET 1604-10-862-007

tempVal++;*readcount=tempVal;n=tempVal;

while(n>0){

rem=n%10;n=n/10;rev=rem+(rev*10);

}n=rev;while(n>0){

rem=n%10;n=n/10;switch(rem){

case 0:value[i]='0';break;case 1:value[i]='1';break;case 2:value[i]='2';break;case 3:value[i]='3';break;case 4:value[i]='4';break;case 5:value[i]='5';break;case 6:value[i]='6';break;case 7:value[i]='7';break;case 8:value[i]='8';break;case 9:value[i]='9';break;

}i++;

}value[i]='\0';strcpy(msg,value);shmdt((char *)msg);

}

void decrement(int *readcount,int shmid){

int n,rev=0,rem=0,i=0,tempVal=0;char *msg,value[5];msg=shmat(shmid,0,0);tempVal=atoi(msg);tempVal--;*readcount=tempVal;n=tempVal;

while(n>0){

rem=n%10;n=n/10;rev=rem+(rev*10);

}n=rev;


MJCET 1604-10-862-007

while(n>0){

rem=n%10;n=n/10;switch(rem){

case 0:value[i]='0';break;case 1:value[i]='1';break;case 2:value[i]='2';break;case 3:value[i]='3';break;case 4:value[i]='4';break;case 5:value[i]='5';break;case 6:value[i]='6';break;case 7:value[i]='7';break;case 8:value[i]='8';break;case 9:value[i]='9';break;

}i++;

}value[i]='\0';strcpy(msg,value);shmdt((char *)msg);

}

OUTPUT:

SINGLE WRITER:

[mca1002@localhost]~/UNIX/Semaphores% cc Writer.c /tmp/ccMiIL7T.o: In function `writer':Writer.c:(.text+0x236): warning: the `gets' function is dangerous and should not be used.

[mca1002@localhost]~/UNIX/Semaphores% ./a.out

WRITER IS ACTIVEENTER SOME TEXT TO BE WRITTEN TO THE FILEhello to allWRITER FINISHED WRITING

WRITER IS ACTIVEENTER SOME TEXT TO BE WRITTEN TO THE FILEsocket is goodWRITER FINISHED WRITING

WRITER IS ACTIVEENTER SOME TEXT TO BE WRITTEN TO THE FILEgoing to close nowWRITER FINISHED WRITING


MJCET 1604-10-862-007

WRITER IS ACTIVEENTER SOME TEXT TO BE WRITTEN TO THE FILEbyeWRITER FINISHED WRITING

WRITER IS ACTIVEENTER SOME TEXT TO BE WRITTEN TO THE FILEBYEWRITER FINISHED WRITING

WRITER ENDING NOW

READER 1:

[mca1002@localhost]~/UNIX/Semaphores% cc Reader.c [mca1002@localhost]~/UNIX/Semaphores% ./a.out

READER IS ACTIVEhello to allREADER FINISHED READING

READER IS ACTIVEsocket is goodREADER FINISHED READING

READER IS ACTIVEgoing to close nowREADER FINISHED READING

READER IS ACTIVEbyeREADER FINISHED READING

READER IS ACTIVEBYEREADER FINISHED READING

READING ENDING NOW

READER 2:


READER IS ACTIVEhello to allREADER FINISHED READING

READER IS ACTIVEsocket is good


MJCET 1604-10-862-007

READER FINISHED READING




READING ENDING NOW

READER 3 JOINED LATER:


READER IS ACTIVEsocket is goodREADER FINISHED READING




READING ENDING NOW


MJCET 1604-10-862-007

5. write the programs shmget.c, shmctl.c and shmop.c and then

investigate and understand fully the operations of the flags (access, creation etc. permissions) you can set interactively in the programs.

Use the prgrams to:

o Exchange data between two processe running as shmop.c. o Inquire about the state of shared memory with shmctl.c. o Use semctl.c to lock a shared memory segment. o Use semctl.c to delete a shared memory segment.

#include "stdio.h"

#include "string.h"

#include "sys/ipc.h"

#include "sys/types.h"

#include "sys/shm.h"

int main()

{

int shmid;

char *msg, str[20];

shmid = shmget((key_t)0x10,20,IPC_CREAT|0666);

msg=shmat(shmid,0,0);

printf("\n The message read from the shared memory is %s \n", msg);

}

#include "stdio.h"

#include "string.h"

#include "sys/ipc.h"

#include "sys/types.h"

#include "sys/shm.h"


MJCET 1604-10-862-007

int main()

{

int shmid;

char *msg, str[20];

shmid = shmget((key_t)0x10,20,IPC_CREAT|0666);

msg=shmat(shmid,0,0);

if(shmid>0)

{

printf("\n The shared memory segment has been created \n");

printf("\n Enter a string :\t");

scanf("%s",str);

strcpy(msg,str);

printf("\n String is stored in the shared memory\n ");

}

}


MJCET 1604-10-862-007

6. Write a program to demonstrate signal communication.

#include<stdio.h>#include<signal.h>

void abc(){

printf("Signal handler function\n");}

main(){

int pid;

pid=fork();if(pid==0){

signal(SIGQUIT,abc);printf("\nWaiting for the signal from parent");fflush(stdout);sleep(5);

}else{

printf("\nEnter the ctrl+\\ Key combination\n");fflush(stdout);sleep(5);kill(getpid(), SIGQUIT);

}}


MJCET 1604-10-862-007

7. Write a program to demonstrate file locking.

#include<stdio.h>#include<fcntl.h>

struct student{

int rollno;char name[20];char add[30];

} s;

main(){

int fd;

fd=open("student.dat",O_WRONLY);write(fd, &s, sizeof(s));lockf(fd,F_ULOCK,sizeof(s));

}

#include<stdio.h>#include<fcntl.h>

struct student{

int rollno;char name[20];char add[30];

} s;

main(){

int fd,t;

fd=open("student.dat",O_RDONLY);t=lockf(fd,F_TEST, sizeof(s));if(t==0)

lockf(fd, F_LOCK, sizeof(s));read(fd,&s,sizeof(s));printf("%s",s);

elseprintf("File is already locked");

}


MJCET 1604-10-862-007

8. Write client/server programs using connection oriented service. Implement server as echo server.

#include<stdio.h>#include<stdlib.h>#include<errno.h>#include<string.h>#include<sys/types.h>#include<sys/socket.h>#include<netinet/in.h>main(){

struct sockaddr_in servaddr;int sockfd,newsockfd,port;char serv[32],msg[20],str[20];printf("ENTER PORT NUMBER : ");scanf("%d",&port);printf("\nENTER IP ADDRESS : ");scanf("%s",serv);servaddr.sin_family=AF_INET;servaddr.sin_port=htons(port);servaddr.sin_addr.s_addr=inet_addr(serv);if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1){ perror("UNABLE TO SOCKET");exit(0); }if(connect(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr))!=0){ perror("UNABLE TO CONNECT");exit(0);}printf("\nENTER MESSAGE : ");scanf("%s",msg);if(write(sockfd,msg,sizeof(msg))==-1)perror("UNABLE TO WRITE");if(read(sockfd,str,sizeof(str))==-1)perror("UNABLE TO READ");printf("\n%s\n",str);shutdown(sockfd,2);

}

OUTPUT:

[mca1002@localhost]~/UNIX/Sockets/EchoServer% cc co_client_ori.c [mca1002@localhost]~/UNIX/Sockets/EchoServer% ./a.out ENTER PORT NUMBER : 7ENTER IP ADDRESS : 127.0.0.1ENTER MESSAGE : hellohello


MJCET 1604-10-862-007

9. Write client/server programs using connection less service. Implement server as Date Timeserver.

#include<errno.h>#include<sys/socket.h>#include<netinet/in.h>#include<stdio.h>#include<sys/stat.h>#include<string.h>#include<unistd.h>#include<fcntl.h>#include<sys/types.h>main(){

char command[6];struct sockaddr_in servaddr;int sockfd,port,len;char serv[20],msg[40];printf("\nENTER PORT NUMBER : ");scanf("%d",&port);printf("\nENTER IP ADDRESS : ");scanf("%s",serv);servaddr.sin_family=AF_INET;servaddr.sin_port=htons(port);servaddr.sin_addr.s_addr=inet_addr(serv);if((sockfd=socket(AF_INET,SOCK_DGRAM,0))==-1)perror("UNABLE TO SOCKET");strcpy(command,"DATE");if(sendto(sockfd,command,sizeof(command),0,(struct sockaddr*)&servaddr,sizeof(servaddr))==-1)

perror("CLIENT COULD NOT SEND\n");len=sizeof(servaddr);if(recvfrom(sockfd,msg,sizeof(msg),0,(struct sockaddr *)&servaddr,&len)==-1)

perror("CLIENT COULD NOT RECEIVE\n");printf("\n%s\n",msg);shutdown(sockfd,2);}

OUTPUT:

[root@localhost DayTime]# cc CL_client.c [root@localhost DayTime]# ./a.outENTER PORT NUMBER : 13ENTER IP ADDRESS : 127.0.0.1

Sun Jun 26 15:03:04 2011


MJCET 1604-10-862-007

10. Write client/server programs using connection oriented service. Implement server as it gives result of command which is requested by client. The output has to be displayed in client.

[mca1002@localhost]~/UNIX/Sockets/RemPrgmExec% cat CO_IT_server.c

#include<stdio.h>#include<errno.h>#include<sys/stat.h>#include<sys/types.h>#include<sys/socket.h>#include<netinet/in.h>#include<string.h>#include<unistd.h>#include<fcntl.h>main(){

int pid,i;char ch,filename[20],command[30];struct sockaddr_in servaddr,cliaddr;int sockfd,newsockfd,port,len,retval,client;char serv[50],str[2048];printf("ENTER PORT NUMBER : ");scanf("%d",&port);printf("\nENTER IP ADDRESS : ");scanf("%s",serv);servaddr.sin_family=AF_INET;servaddr.sin_port=htons(port);servaddr.sin_addr.s_addr=inet_addr(serv);sockfd=socket(AF_INET,SOCK_STREAM,0);if(sockfd==-1)perror("UNABLE TO SOCKET\n");retval=bind(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr));if(retval==-1)perror("UNABLE TO BIND\n");retval=listen(sockfd,3);if(retval==-1)perror("UNABLE TO LISTEN\n");while(1){

len=sizeof(cliaddr);newsockfd=accept(sockfd,(struct sockaddr *)&cliaddr,&len);if(newsockfd==-1)perror("UNABLE TO ACCEPT\n");client=ntohs(cliaddr.sin_port);printf("READING FROM CLIENT : %d\n",client);pid=fork();if(pid==0){

int fp;FILE *fc;

if(read(newsockfd,filename,sizeof(filename))==-1)perror("UNABLE TO READ SERVER");

strcpy(command,"cc -o ex ");


MJCET 1604-10-862-007

strcat(command,filename);fc=popen(command,"r");fclose(fc);fp=open("test",O_CREAT|O_WRONLY|O_TRUNC,0666);close(1);if(dup2(fp,1)==-1)perror("ERROR DUP");if(execl("./ex",(char *)0)==-1)perror("ERROR EXEC");

}else{

wait(0);FILE *fp;i=0;fp=fopen("test","r");if(fp==NULL)

write(newsockfd,"COULD NOT EXECUTE",18);else{

while((ch=fgetc(fp))!=EOF){

printf("%c",ch);str[i]=ch;i++;

}str[i]='\0';write(newsockfd,str,sizeof(str));fclose(fp);

}}printf("SERVICED CLIENT : %d\n",client);shutdown(newsockfd,2);

}}

[mca1002@localhost]~/UNIX/Sockets/RemPrgmExec% cat CO_client.c


MJCET 1604-10-862-007

#include<errno.h>#include<sys/socket.h>#include<netinet/in.h>#include<stdio.h>#include<sys/stat.h>#include<string.h>#include<unistd.h>#include<fcntl.h>#include<sys/types.h>

main(){

int pid;char ch,filename[20],command[30];struct sockaddr_in servaddr;int sockfd,newsockfd,port,len;char serv[20],str[20],msg[2048];printf("\nENTER PORT NUMBER : ");scanf("%d",&port);printf("\nENTER IP ADDRESS : ");scanf("%s",serv);servaddr.sin_family=AF_INET;servaddr.sin_port=htons(port);servaddr.sin_addr.s_addr=inet_addr(serv);if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1)perror("UNABLE TO SOCKET");if(connect(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr))==-1)

perror("UNABLE TO CONNECT");printf("\nENTER FILENAME : ");scanf("%s",filename);if(write(sockfd,filename,sizeof(filename))==-1)perror("UNABLE TO WRITE");if(read(sockfd,msg,sizeof(msg))==-1)perror("UNABLE TO READ");printf("\n%s\n",msg);shutdown(sockfd,2);

}

OUTPUT:

SERVER:

[mca1002@localhost]~/UNIX/Sockets/RemPrgmExec% cc CO_IT_server.c[mca1002@localhost]~/UNIX/Sockets/RemPrgmExec% ./a.out ENTER PORT NUMBER : 7000ENTER IP ADDRESS : 127.0.0.1

READING FROM CLIENT : 44739SUM IS 15 SERVICED CLIENT : 44739

READING FROM CLIENT : 44742SUM IS 15 SERVICED CLIENT : 44742

^C


MJCET 1604-10-862-007

CLIENT 1:

[mca1002@localhost]~/UNIX/Sockets/RemPrgmExec% cc CO_client.c[mca1002@localhost]~/UNIX/Sockets/RemPrgmExec% ./a.out ENTER PORT NUMBER : 7000ENTER IP ADDRESS : 127.0.0.1

ENTER FILENAME : sum.c

SUM IS 15CLIENT 2:

[mca1002@localhost]~/UNIX/Sockets/RemPrgmExec% cc CO_client.c[mca1002@localhost]~/UNIX/Sockets/RemPrgmExec% ./a.outENTER PORT NUMBER : 7000ENTER IP ADDRESS : 127.0.0.1

ENTER FILENAME : sum.c

SUM IS 15


MJCET 1604-10-862-007

12. Write client/server programs using connection oriented service. Implement server as it validates username/password given by client and send back result to client.

#include<string.h>#include<stdlib.h>#include<stdio.h>#include<unistd.h>main(){

int pid,p1[2],p2[2],found=0;char name[20],passwd[20],nametemp[20],passwdtemp[20],status[20];FILE *fp;pipe(p1);pipe(p2);pid=fork();if(pid==-1){ perror("FAILURE"); }else if(pid!=0){

close(p1[0]);close(p2[1]);printf("ENTER USER NAME : \n");gets(name);printf("ENTER PASSWORD : \n");gets(passwd);write(p1[1],name,sizeof(name));write(p1[1],passwd,sizeof(passwd));read(p2[0],status,sizeof(status));printf("%s",status);

}else{

close(p2[0]);close(p1[1]);read(p1[0],name,sizeof(name));read(p1[0],passwd,sizeof(passwd));fp=fopen("user_namepasswd","r");if(fp==NULL){

perror("ERROR\n");exit(0);

}else{

while(!feof(fp)){

fscanf(fp,"%s\t%s",nametemp,passwdtemp);if(strcmp(nametemp,name)==0 &&

strcmp(passwdtemp,passwd)==0){

found=1;


MJCET 1604-10-862-007

write(p2[1],"ACCESS GRANTED",15);break;

}}if(found==0){

write(p2[1],"ACCESS DENIED",14);}fclose(fp);

}}

}

OUTPUT:

[mca1002@localhost]~/UNIX/Pipes% cat user_namepasswd mca1002 mca1002mca1003 mca1003mca1004 mca1004mca1005 mca1005mca1006 mca1006mca1007 mca1007amatul haiy

[mca1002@localhost]~/UNIX/Pipes% cc q7.c /tmp/cccnZrKc.o: In function `main':q7.c:(.text+0x90): warning: the `gets' function is dangerous and should not be used.

[mca1002@localhost]~/UNIX/Pipes% ./a.outENTER USER NAME : mca1002ENTER PASSWORD : mca1002ACCESS GRANTED


MJCET 1604-10-862-007

13 .Write client/server programs using connection oriented service. Implement server as it sends contents of file which is requested by client. The content has to be displayed in client.

#include<stdio.h>#include<unistd.h>main(){

int pid,p1[2],p2[2];char source[20],dest[20],ch;FILE *fpSource,*fpDest;

pipe(p1);pipe(p2);

pid=fork();if(pid==-1){

perror("FAILURE");}

else if(pid!=0){

close(p1[0]);close(p2[1]);printf("ENTER SOURCE FILENAME : ");gets(source);write(p1[1],source,20);read(p2[0],dest,20);printf("%s",dest);

}else{

close(p2[0]);close(p1[1]);read(p1[0],source,20);printf("ENTER DESTINATION FILE NAME FOR COPYING : ");gets(dest);fpSource=fopen(source,"r");fpDest=fopen(dest,"w");if(fpSource==NULL||fpDest==NULL){

printf("CANNOT OPEN FILES\n");write(p2[1],"FAILURE",20);

}else{

while((ch=fgetc(fpSource))!=EOF){

fputc(ch,fpDest);}write(p2[1],dest,20);


MJCET 1604-10-862-007

}}

}

OUTPUT:

[mca1002@localhost]~/UNIX/Pipes% cat username amatul haiynazneenatiya


MJCET 1604-10-862-007

14 a. Demonstrate the readv, writev socket system calls

/* Advanced socket system calls - readv server */

#include<stdio.h>#include<sys/uio.h>#include<sys/socket.h>#include<sys/types.h>#include<netinet/in.h>#include<stdlib.h>

int main(){

struct iovec iov[3];

int sockfd,new_sockfd,len,rval;

struct sockaddr_in servaddr,cliaddr;

char str1[20],str2[20],str3[20];

sockfd=socket(AF_INET,SOCK_STREAM,0);

if (sockfd==-1){

perror("Socket creation error");exit(0);

}

servaddr.sin_family=AF_INET;servaddr.sin_addr.s_addr=inet_addr("127.0.0.1");servaddr.sin_port=htons(5678);

rval=bind(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr));

if (rval==-1){

perror("Bind Error");exit(0);

}

rval=listen(sockfd,5);

if (rval==-1){

perror("listen error");exit(0);

}

iov[0].iov_base=str1;iov[0].iov_len=sizeof(str1);iov[1].iov_base=str2;


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iov[1].iov_len=sizeof(str2);

iov[2].iov_base=str3; iov[2].iov_len=sizeof(str3);

len=sizeof(cliaddr);new_sockfd=accept(sockfd,(struct sockaddr *)&cliaddr,&len);

if (new_sockfd==-1){

perror("Accept Error");exit(0);

}

readv(new_sockfd,&iov[0],3);

printf ("\n The data read is : %s %s %s",str1,str2,str3);}

/* Advanced socket system calls - writev client*/

#include<stdio.h>#include<sys/uio.h>#include<sys/socket.h>#include<sys/types.h>#include<netinet/in.h>#include<string.h>#include<stdlib.h>

int main(){

struct iovec iov[3];

int sockfd,ret;

struct sockaddr_in servaddr;

char str1[20],str2[20],str3[20];

printf ("\n Enter a string :");scanf("%s",str1);

printf("\n Enter the second string :");scanf("%s",str2);

printf("\n enter the third string");scanf("%s",str3);

iov[0].iov_base=str1;iov[0].iov_len=sizeof(str1);


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iov[1].iov_base=str2;iov[1].iov_len=sizeof(str2);iov[2].iov_base=str3;iov[2].iov_len=sizeof(str3);



ret=connect(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr));

if (ret==-1){

perror("Cannot Connect");exit(0);

}

writev(sockfd,iov,3);

}

OUTPUT:

SERVER:

[mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/Readv_Writev% cc readv_writev.c[mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/Readv_Writev% ./a.out ENTER PORT NUMBER : 8900

CLIENT:

[mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/Readv_Writev% cc client.c[mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/Readv_Writev% ./a.out ENTER PORT NUMBER : 8900hellotoyou


MJCET 1604-10-862-007

14 b. Demonstrate the getpeername, getsockname socket system calls.

[mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/getPeerSockName% cat getpeersock.c

#include<stdio.h>#include<sys/socket.h>#include<sys/types.h>#include<netinet/in.h>#include<stdlib.h>

int main(){

struct sockaddr_in serv_addr,cli_addr,peer_addr,my_addr;char str[20];int port_no,sockfd,new_sockfd,len,rval;char serv[20],msg1[20],msg2[20];

sockfd=socket(AF_INET,SOCK_STREAM,0);rresvport(&port_no);serv_addr.sin_family=AF_INET;serv_addr.sin_port=htons(port_no);serv_addr.sin_addr.s_addr=inet_addr("127.0.0.1");

if (sockfd==-1){

perror("socket error");exit(0);

}printf("\n Server port number is %d",port_no);fflush(stdout);rval=bind(sockfd,(struct sockaddr *)&serv_addr,sizeof(serv_addr));if (rval==-1)

{ perror("Cannot Bind"); exit(0); }

rval=listen(sockfd,5);if (rval==-1)

{ perror("Listen Error"); exit(0); }

while (1){

new_sockfd=accept(sockfd,(struct sockaddr *)&cli_addr,&len);if (new_sockfd==-1)


MJCET 1604-10-862-007

{ perror("Accept Error");

exit(0); }

getpeername(new_sockfd,(struct sockaddr *)&peer_addr,&len);

printf("\n Client port no is : %d",ntohs(peer_addr.sin_port)); printf("\n Address is : %s",inet_ntoa(peer_addr.sin_addr.s_addr));

getsockname(new_sockfd,(struct sockaddr *)&my_addr,&len);printf("\n Server port no is : %d",ntohs(my_addr.sin_port));

printf("\n Address is : %s",inet_ntoa(my_addr.sin_addr.s_addr));

fflush(stdout);

read(new_sockfd,msg1,sizeof(msg1));write(new_sockfd,msg1,sizeof(msg1));

}

}

[mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/getPeerSockName% cat client.c

#include<stdio.h>#include<sys/socket.h>#include<sys/types.h>#include<netinet/in.h>#include<stdlib.h>int main(){

int sockfd,ret;

struct sockaddr_in servaddr;

char str1[20],str2[20];



ret=connect(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr));

if (ret==-1){

perror("\n Cannot connect");exit(0);

}


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printf ("\n Enter a string to send : ");scanf("%s",str1);

write(sockfd,str1,20);

read(sockfd,str2,20);

printf("\n Received string is : %s",str2);}OUTPUT:

SERVER:

[mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/getPeerSockName% cc getpeersock.c [mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/getPeerSockName% ./a.outENTER PORT NUMBER : 5678PEER PORT : 53928SELF PORT : 5678

CLIENT:

[mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/getPeerSockName% cc client.c [mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/getPeerSockName% ./a.outENTER PORT NUMBER : 5678PEER PORT : 5678SELF PORT : 53928


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14 c. Demonstrate the getsockopt, setsockopt socket system calls.

[mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/getsetSockOpt% cat getsetSockOpt.c

#include<stdio.h>#include<netinet/in.h>#include<sys/socket.h>#include<sys/types.h>#include<netinet/tcp.h>

int main(){

int sockfd,optval,optlen,max_size;


optlen=sizeof(optval);

if (getsockopt(sockfd,IPPROTO_TCP,TCP_MAXSEG,(char*)&optval,&optlen)<0)perror("get sock error 1");

printf("\n The maximum TCP segment size is %d",optval);

optval=1800;

if (setsockopt(sockfd,SOL_SOCKET,SO_SNDBUF,(char*)&optval,sizeof(optval))<0)perror("set sock error");

if(getsockopt(sockfd,SOL_SOCKET,SO_SNDBUF,(char*)&optval,&optlen)<0)perror("get sock error 2");

printf("\n Send buffer size is %d",optval);

}OUTPUT:

[mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/getsetSockOpt% cc getsetSockOpt.c [mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/getsetSockOpt% ./a.outTCP MAXSEG : 536SEND BUFFER SIZE : 34000


MJCET 1604-10-862-007

14 d. Demonstrate the socketpair, shutdown socket system calls

[mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/sockpairShutdown% cat socketpairShutdown.c

#include<sys/socket.h>#include<stdio.h>main(){

int filedesc[2];char str[20],msg[10]="HELLO";socketpair(AF_UNIX,SOCK_STREAM,0,filedesc);shutdown(filedesc[0],0);shutdown(filedesc[1],1);write(filedesc[0],msg,sizeof(msg));read(filedesc[1],str,sizeof(str));printf("STRING : %s\n",str);

}

OUTPUT:

[mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/sockpairShutdown% cc socketpairShutdown.c [mca1002@localhost]~/UNIX/Sockets/DEMONSTRATION/sockpairShutdown% ./a.out

STRING : HELLO


MJCET 1604-10-862-007

14 e. Demonstrate the rresvport socket system calls

The rresvport() function is used to obtain a socket with a privileged address bound to it. This socket is suitable for use by rcmd() and several other functions. Privileged Internet ports are those in the range 0 to 1023. Only the superuser is allowed to bind an address of this sort to a socket. */

#include<unistd.h>#include<stdio.h>

int main(){

int port_no,sockfd;

sockfd=rresvport(&port_no);

if (sockfd==-1)perror("Socket not created");

printf("\n The port no allocated by rresvport is : %d",port_no);}OUTPUT:

[root@localhost rresvport]# cc rresvport.c [root@localhost rresvport]# ./a.out

PORT BY rresvport : 3


MJCET 1604-10-862-007

15. Write a program to demonstrate asynchronous I/O.

/* Connection Oriented Server */

#include<stdio.h>#include<sys/socket.h>#include<sys/types.h>#include<netinet/in.h>#include<stdlib.h>#include<signal.h>#include<fcntl.h>

struct sockaddr_in serv_addr,cli_addr;int port_no,len,rval,sockfd,new_sockfd;char serv[20],msg1[20],msg2[20];

void sig_handler();

int main(){

struct sockaddr_in serv_addr,cli_addr;char str[20];int port_no,len,rval,i;char serv[20],msg1[20],msg2[20];

printf("\n Enter the server port number :");scanf("%d",&port_no);printf("\n Enter the server IP address :");scanf("%s",serv);

serv_addr.sin_port=htons(port_no);serv_addr.sin_addr.s_addr=inet_addr(serv);serv_addr.sin_family=AF_INET;


if (sockfd==-1){

perror("Cannot create socket");exit(0);

}

rval=bind(sockfd,(struct sockaddr *)&serv_addr,sizeof(serv_addr));

if (rval==-1) { perror("Cannot Bind"); exit(0); }


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rval=listen(sockfd,5); if (rval==-1) { perror("Listen Error"); exit(0); }

len=sizeof(cli_addr); new_sockfd=accept(sockfd,(struct sockaddr *)&cli_addr,&len); if (new_sockfd==-1) { perror("Accept Error"); exit(0); }

signal(SIGIO,sig_handler);fcntl(new_sockfd,F_SETOWN,getpid());fcntl(new_sockfd,F_SETFL,FASYNC);

i=1;while (i){

sleep(1);printf("\n%d Waiting for input",i++);

}

}void sig_handler(){

read(new_sockfd,msg1,sizeof(msg1));printf("\n In server the message received is : %s",msg1); write(new_sockfd,msg1,sizeof(msg1));

}

/* Connection Oriented Client */

#include<stdio.h>#include<sys/socket.h>#include<sys/types.h>#include<netinet/in.h>#include<stdlib.h>

int main(){

struct sockaddr_in serv_addr;char str[20];int port_no,sockfd,rval;char serv[20],msg1[20],msg2[20];


MJCET 1604-10-862-007

printf("\n Enter the server port number :");scanf("%d",&port_no);printf("\n Enter the server IP address :");scanf("%s",serv);

serv_addr.sin_port=htons(port_no);serv_addr.sin_addr.s_addr=inet_addr(serv);serv_addr.sin_family=AF_INET;

sockfd=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);

if (sockfd==-1){

perror("Socket creation error");exit(0);

}

rval=connect(sockfd,(struct sockaddr *)&serv_addr,sizeof(serv_addr));

if (rval==-1){

perror("Connection Error");exit(0);

}

printf("\n Enter the message to send :");scanf("%s",msg1);

write(sockfd,msg1,sizeof(msg1));read(sockfd,msg2,sizeof(msg2));

printf("\n The message recevied is : %s",msg2);}

OUTPUT:

SERVER:

[mca1002@localhost]~/UNIX/Sockets/Asynchronous% cc AsyncEchoServer_server.c [mca1002@localhost]~/UNIX/Sockets/Asynchronous% ./a.outENTER PORT NUMBER8900STARTED CONNECTION....

SERVER DOING ITS OWN WORK : 0SERVER DOING ITS OWN WORK : 1SERVER DOING ITS OWN WORK : 2


SERVER DOING ITS OWN WORK : 3


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CLIENT:

[mca1002@localhost]~/UNIX/Sockets/Asynchronous% cc AsyncEchoServer_client.c [mca1002@localhost]~/UNIX/Sockets/Asynchronous% ./a.out ENTER PORT NUMBER : 8900ENTER MESSAGE : hellohello


MJCET 1604-10-862-007

16. Write a program to implement the Internet Super server

[mca1002@localhost]~/UNIX/Sockets/Internet% cat InternetSuperServer.c

#include<stdio.h>#include<sys/select.h>#include<time.h>#include<string.h>#include<sys/stat.h>#include<sys/types.h>#include<sys/socket.h>#include<netinet/in.h>void server_service(int newsockfd,int i);main(){

struct sockaddr_in servaddr1,servaddr2,cliaddr;int sockfd[2],newsockfd,port1,port2,len,retval,client,i,pid;char serv[50];fd_set fs;printf("ENTER PORT NUMBER FOR ECHO : ");scanf("%d",&port1);printf("ENTER PORT NUMBER FOR DAYTIME : ");scanf("%d",&port2);strcpy(serv,"127.0.0.1");

servaddr1.sin_family=AF_INET;servaddr1.sin_port=htons(port1);servaddr1.sin_addr.s_addr=inet_addr(serv);

servaddr2.sin_family=AF_INET;servaddr2.sin_port=htons(port2);servaddr2.sin_addr.s_addr=inet_addr(serv);

sockfd[0]=socket(AF_INET,SOCK_STREAM,0);sockfd[1]=socket(AF_INET,SOCK_STREAM,0);

if(sockfd[0]==-1||sockfd[1]==-1)perror("UNABLE TO SOCKET\n");retval=bind(sockfd[0],(struct sockaddr *)&servaddr1,sizeof(servaddr1));if(retval==-1)perror("UNABLE TO BIND\n");retval=bind(sockfd[1],(struct sockaddr *)&servaddr2,sizeof(servaddr2));if(retval==-1)perror("UNABLE TO BIND\n");

retval=listen(sockfd[0],2);if(retval==-1)perror("UNABLE TO LISTEN\n");

retval=listen(sockfd[1],2);if(retval==-1)perror("UNABLE TO LISTEN\n");printf("STARTED CONNECTION....\n");while(1){


MJCET 1604-10-862-007

FD_ZERO(&fs);FD_SET(sockfd[0],&fs);FD_SET(sockfd[1],&fs);select(sockfd[1]+1,&fs,NULL,NULL,NULL);for(i=0;i<=1;i++){

if(FD_ISSET(sockfd[i],&fs)){

len=sizeof(cliaddr);newsockfd=accept(sockfd[i],(struct sockaddr *)&cliaddr,&len);if(newsockfd==-1){

perror("UNABLE TO CONNECT\n");}pid=fork();if(pid==0){

client=ntohs(cliaddr.sin_port);printf("\nREADING FROM CLIENT AT PORT :

%d",client);server_service(newsockfd,i);printf("\nSERVICED CLIENT AT PORT : %d\n",client);

}else{

wait(0);shutdown(newsockfd,2);

}}

}}

}

void server_service(int newsockfd,int i){

char str[20],ch;time_t timer;switch(i){

case 0:if(read(newsockfd,str,sizeof(str))==-1)

perror("UNABLE TO READ FROM CLIENT");if(write(newsockfd,str,sizeof(str))==-1)perror("ERROR WHILE WRITING");break;

case 1:if(read(newsockfd,str,sizeof(str))==-1)

perror("UNABLE TO READ FROM CLIENT");time(&timer);strcpy(str,ctime(&timer));if(write(newsockfd,str,sizeof(str))==-1)perror("ERROR WHILE WRITING");


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break;}}

[mca1002@localhost]~/UNIX/Sockets/Internet% cat ECHO_CO_client.c

#include<stdio.h>#include<stdlib.h>#include<errno.h>#include<string.h>#include<sys/types.h>#include<sys/socket.h>#include<netinet/in.h>void client_service(int sockfd);main(){

struct sockaddr_in servaddr;int sockfd,newsockfd,port;char serv[32],msg[20],str[20];printf("ENTER PORT NUMBER : ");scanf("%d",&port);//printf("\nENTER IP ADDRESS : ");//scanf("%s",serv);strcpy(serv,"127.0.0.1");servaddr.sin_family=AF_INET;servaddr.sin_port=htons(port);servaddr.sin_addr.s_addr=inet_addr(serv);

if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1){

perror("UNABLE TO SOCKET");exit(0);

}if(connect(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr))!=0){

perror("UNABLE TO CONNECT");exit(0);

}printf("\nENTER MESSAGE : ");scanf("%s",msg);if(write(sockfd,msg,sizeof(msg))==-1)perror("UNABLE TO WRITE");if(read(sockfd,str,sizeof(str))==-1)perror("UNABLE TO READ");printf("\n%s\n",str);shutdown(sockfd,2);

}

[mca1002@localhost]~/UNIX/Sockets/Internet% cat DATE_CO_client.c


MJCET 1604-10-862-007

#include<errno.h>#include<sys/socket.h>#include<netinet/in.h>#include<stdio.h>#include<sys/stat.h>#include<string.h>#include<unistd.h>#include<fcntl.h>#include<sys/types.h>main(){

int pid;char ch,filename[20],command[30];struct sockaddr_in servaddr;int sockfd,newsockfd,port,len;char serv[20],str[20],msg[35];printf("\nENTER PORT NUMBER : ");scanf("%d",&port);printf("\nENTER IP ADDRESS : ");scanf("%s",serv);servaddr.sin_family=AF_INET;servaddr.sin_port=htons(port);servaddr.sin_addr.s_addr=inet_addr(serv);if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1)perror("UNABLE TO SOCKET");if(connect(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr))==-1)

perror("UNABLE TO CONNECT");strcpy(command,"DATE");if(write(sockfd,command,sizeof(command))==-1)perror("UNABLE TO WRITE");if(read(sockfd,msg,sizeof(msg))==-1)perror("UNABLE TO READ");printf("\n%s\n",msg);shutdown(sockfd,2);

}

OUTPUT:

SERVER:

[mca1002@localhost]~/UNIX/Sockets/Internet% cc InternetSuperServer.c[mca1002@localhost]~/UNIX/Sockets/Internet% ./a.out

ENTER PORT NUMBER FOR ECHO : 5678

ENTER PORT NUMBER FOR DAYTIME : 6789

STARTED CONNECTION....




MJCET 1604-10-862-007

^C

CLIENT 1 AT ECHO PORT:

[mca1002@localhost]~/UNIX/Sockets/Internet% cc ECHO_CO_client.c[mca1002@localhost]~/UNIX/Sockets/Internet% ./a.out

ENTER PORT NUMBER : 5678

ENTER MESSAGE : hello

hello

CLIENT 1 AT DAYTIME PORT:

[mca1002@localhost]~/UNIX/Sockets/Internet% cc DATE_CO_client.c[mca1002@localhost]~/UNIX/Sockets/Internet% ./a.out

ENTER PORT NUMBER : 6789ENTER IP ADDRESS : 127.0.0.1

Wed Jun 22 06:52:13


MJCET 1604-10-862-007

ASSIGNMENT – V

PHP SERVER SCRIPT

[root@localhost PHP]# cat Hello.php 1.Write a PHP script to display Hello World Message

<HTML><HEAD>

<TITLE>WELCOME MESSAGE

</TITLE></HEAD><BODY>

<?phpecho 'hello';print '<BR>hello<BR />';

?></BODY>

</HTML>


MJCET 1604-10-862-007

2.Write a PHP script to demonstrate string functions<HTML>

<HEAD><TITLE>

DEMO STRING FUNCTIONS</TITLE>

</HEAD><BODY>

<?php$str='hello';$len=strlen($str);print "<BR>LENGTH OF HELLO : ".$len."<BR />";$str2='HELLO';if(strcmp($str,$str2)==0)

print $str." and ".$str2." are same";else

print $str." and ".$str2." are different";$pos=strpos($str,'lo');print "<BR>lo at position ".($pos+1)." in ".$str;$sub=substr($str,3);print "<BR>substr(hello,3) : ".$sub;$sub=chop($str);print "<BR>".$sub;

?></BODY>

</HTML>


MJCET 1604-10-862-007

3. Write a PHP script to demonstrate number functions<HTML>

<HEAD><TITLE>

DEMO NUMBER FUNCTIONS</TITLE>

</HEAD><BODY>

<?php$num=-5.90;print "<BR>CEIL OF ".$num." IS ".ceil($num);print "<BR>FLOOR OF ".$num." IS ".floor($num);print "<BR>ABS OF ".$num." IS ".abs($num);print "<BR>ROUND OF ".$num." IS ".round($num);$num2=6;print "<BR>MINIMUM OF ".$num." and ".$num2." IS ".min($num,$num2);print "<BR>MAXIMUM OF ".$num." and ".$num2." IS ".max($num,$num2);$num=0;$num2=5;print "<BR>RANDOM BETWEEN ".$num." and ".$num2." IS ".rand(0,5);

?></BODY>

</HTML>


MJCET 1604-10-862-007

4. Write a PHP script to find the greatest of three numbers

<HTML><HEAD>

<TITLE>LARGEST OF THREE NUMBERS


<?php$num1=1;$num2=2;$num3=3;print "<BR>MAXIMUM OF ".$num1." and ".$num2." and ".

$num3." IS ".max($num,max($num2,$num3));?>

</BODY></HTML>


MJCET 1604-10-862-007

5. Write a PHP script to create an array, populate the array and display the elements using the foreach statement

<HTML><HEAD>

<TITLE>ARRAY CREATION,POPULATION AND ELEMENT DISPLAY


<?php$arr=array(10,20,30,40,50);for($i=0;$i<sizeof($arr);$i++) print "<BR>arr[".$i."] : ".$arr[$i];$arr=array("aaa"=>10,"bbb"=>30);print '<BR>';foreach($arr as $key=>$value) print "<BR>arr[".$key."] : ".$value;

?></BODY>

</HTML>


MJCET 1604-10-862-007

6.Write a PHP script to demonstrate the following array functions: unset, array_keys, array_values, sizeof, explode, implode

<HTML><HEAD>

<TITLE>ARRAY set,unset,keys,values,sizeof,implode,explode</TITLE>

</HEAD><BODY>

<?php$arr=array(10,20,30,40,50);for($i=0;$i<sizeof($arr);$i++) print "<BR>arr[".$i."] : ".$arr[$i];unset($arr[1]);print '<BR>';for($i=0;$i<=sizeof($arr);$i++) print "<BR>arr[".$i."] : ".$arr[$i];$arr=array("aaa"=>10,"bbb"=>30);print '<BR>';foreach($arr as $key=>$value) print "<BR>arr[".$key."] : ".$value;print '<BR>';$key=array_keys($arr);foreach($key as $keyofarr) print "<BR>key [".$keyofarr."]";print '<BR>';$value=array_values($arr);foreach($value as $valueofarr) print "<BR>value ".$valueofarr;print '<BR>';$str=implode(';',$arr);print "<BR>Implode ".$str;print '<BR>';$arr=explode(';',$str);foreach($arr as $key=>$value) print "<BR>arr[".$key."] : ".$value;

?></BODY>

</HTML>


MJCET 1604-10-862-007


MJCET 1604-10-862-007

7.Write a PHP script which has a function which accepts an array of numbers

and returns the average of these numbers

<HTML><HEAD>

<TITLE>AVERAGE OF NUMBERS OF AN ARRAY

</TITLE><?php

function average($arr){

$avg=0;for($i=0;$i<sizeof($arr);$i++) {

print "$arr[$i]\t"; $avg=$avg+$arr[$i];

}return $avg/sizeof($arr);

}?>

</HEAD><BODY>

<?php$arr=array(10,20,30,40,50);$average=average($arr);print "<BR>average ".$average;

?>

</BODY></HTML>


MJCET 1604-10-862-007

8. Write a php script which has a function that takes File variable of file as argument and returns the Word which appears most often.

<HTML><HEAD>

<TITLE>FILE ARGUMENT IN FUNCTION RETURN COUNT OF WORDS

AND RETURN WORD WITH MAXIMUM COUNT</TITLE><?php

function wordCount($fp,$name){

$freq=array();$arrayfinal=array();$file_stringf=fread($fp,filesize($name));print "ORIGINAL TEXT : $file_stringf<BR>";$file_string=preg_split("/[\s\n\.,;:!\?*]/",$file_stringf);foreach ($file_string as $word){

$keys=array_keys($freq);if(in_array($word,$keys))

$freq[$word]++;else

$freq[$word]=1;}$max=0;foreach($freq as $keys=>$values){

if($values>=$max){ $max=$values; }

}foreach($freq as $keys=>$values){

if($values==$max){ $arrayfinal[$keys]=$values; }

}

return $arrayfinal;}

?></HEAD>

<BODY><?php

$filename="text";$fp=fopen($filename,'r');$arrfin=wordCount($fp,$filename);foreach($arrfin as $keys=>$values){

print "$keys => $values<BR>";}

?>


MJCET 1604-10-862-007

</BODY></HTML>


MJCET 1604-10-862-007

9. Write a php script to demonstrate call by reference And form submitting values to itself

<HTML><HEAD>

<TITLE>REFERENCE


<?phpprint "<H3>";$num1=$_POST["num1"];$num2=$_POST["num2"];$num3=$_POST["num3"];print "<FORM name='myform' method='POST'

action='http://localhost/PHP/reference2.php'>";print "NUMBER 1 :";print "<BR>";print "<input name='num1' type='text' size='10'

value=$num1>";print "<BR>";

print "NUMBER 2 :";print "<BR>";print "<input name='num2' type='text' size='10' value=$num2>";print "<BR>";

print "NUMBER 3 :";print "<BR>";print "<input name='num3' type='text' size='10' value=$num3>";print "<BR>";

print "<input type='submit' value='calculate'>";

maxim($num1,$num2,$num3);

function maxim(&$max,$x,$y){

if($max<$x){ $max=$x; }if($max<$y){ $max=$y; }

}print "<BR><BR>maximum : $num1";print"</FORM>";print "</H3>";?>

</BODY></HTML>


MJCET 1604-10-862-007


MJCET 1604-10-862-007

10. PHP SCRIPT TO DEMONSTRATE SCOPE AND LIFETIMEOF VARIABLES.<HTML><HEAD>

<TITLE>SCOPE AND LIFETIME OF VARIABLES</TITLE></HEAD><BODY>

<?php$number=10;print "<H3>";print "<BR>LOCAL NUMBER DEMO";print "<BR>number outside function : $number";function AddNumber(){

$number;print "<BR>number inside function : $number";$number=30;print "<BR>number now assigned value : $number";$number+=10;print "<BR>number after incrementing by 10: $number";

}AddNumber();print "<BR>number after (outside) function call: $number";print "<BR><BR>";print "GLOBAL NUMBER DECLARATION DEMO";print "<BR>number outside function : $number";function addNum(){

global $number;print "<BR>number inside function : $number";$number=30;print "<BR>number now assigned value : $number";$number+=10;print "<BR>number after incrementing by 10: $number";

}addNum();print "<BR>number after (outside) function call: $number";print "<BR><BR>";print "LIFETIME DEMO";

function addNumLife(){

static $number=1;print "<BR>number : $number";$number+=1;

}print "<BR>First function call";addNumLife();print "<BR>Second function call";addNumLife();print "<BR>Third function call";addNumLife();print "</H3>";


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?></BODY></HTML>


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11.WRITE A PHP SCRIPT TO DEMONSTRATE THE USE OF PREG_MATCH AND PREG_SPLIT FUNCTIONS.

<?phpprint "<H2>";print "preg_match DEMO";print "</H2>";print "<H4>";$string="Hello World!BYE";print "STRING : $string";if(preg_match("/^Hello/",$string)){

print "<BR>Hello exists";}else{

print "<BR>Hello doesnt exist";}print "</H4>";

print "<H2>";print "preg_split DEMO";print "</H2>";print "<H4>";print "STRING : $string";$separate=preg_split("/[\s!]/",$string);foreach($separate as $word)

print "<BR>$word";print "</H4>";?>


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12. Write the html code to accept employee information as followsI) text boxes to accept employee name, roll no, address and salaryII) a radio button to accept the type of employee

Write a php script that processes the employee information and generates the salary slip

<HTML><HEAD>

<TITLE>EMPLOYEE INFORMATION


<?php$ename = $_POST["EMPNAME"];$eno = $_POST["EMPNO"];$eaddr = $_POST["EMPADDR"];$esal = $_POST["EMPSAL"];$etype = $_POST["EMPTYPE"];

$da = ($esal*0.05);$hra = ($esal*0.10);$TOTAL = $esal+$da+$hra;

print "<H3>";print("EMPLOYEE NUMBER : $eno");print "</H3>";print "<H4>";print "<BR><BR>";print("$ename,");print "<BR>";print("$eaddr,");print "<BR>";print("$etype");print "</H4>";print "<H2>";print "<CENTER>EMPLOYEE PAY SLIP</CENTER>";print "</H2>";print "<HR color='BLUE'>";print "<TABLE width='150%'>";print "<TR>

<TD><H3>BASIC</H3></TD><TD><H3>$esal</H3></TD></TR>";print "<TR><TD><H3>DA</H3></TD><TD><H3>$da</H3></TD></TR>";print "<TR><TD><H3>HRA</H3></TD><TD><H3>$hra</H3></TD></TR>";print "</TABLE>";print "<HR color='BLUE'>";


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print "<H2>";print("TOTAL SALARY IS $TOTAL");print "</H2>";

?></BODY>

</HTML>


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13. Write html code to create a feedback form to accept Details like name, father's name, address, gender, Occupation (as a drop down list).Store these details in a file by making use of a php a script.

<HTML><HEAD>

<TITLE>FEED BACK FORM

</TITLE></HEAD><BODY BGCOLOR="lightgrey">

<FORM NAME="MYFORM" METHOD="POST" ACTION="http://localhost/PHP/studentServer.php">

<TABLE BORDER="0" HEIGHT="100%" WIDTH="50%" CELLSPACING="0" CELLPADDING="0">

<TR><TD><STRONG>NAME : </STRONG><TD><INPUT NAME="NAME" TYPE="TEXT" SIZE=35

MAXLENGTH=20></INPUT><TR>

<TD><STRONG>FATHER'S NAME : </STRONG>

<TD><INPUT NAME="FNAME" TYPE="TEXT" SIZE=35 MAXLENGTH=20></INPUT>

<TR><TD><STRONG>ADDRESS : </STRONG><BR><TEXTAREA NAME="ADDRESS" COLS=50 ROWS=4

WRAP>ENTER THE ADDRESS HERE</TEXTAREA><TR><TD><STRONG>HOBBIES : </STRONG><BR><BR><INPUT NAME="HOBBIES"

TYPE="CHECKBOX" VALUE="READING">READING<BR><INPUT NAME="HOBBIES" TYPE="CHECKBOX" VALUE="EATING">EATING<BR><INPUT NAME="HOBBIES" TYPE="CHECKBOX" VALUE="SLEEPING">SLEEPING<BR><INPUT NAME="HOBBIES" TYPE="CHECKBOX" VALUE="SINGING">SINGING<BR><INPUT NAME="HOBBIES" TYPE="CHECKBOX" VALUE="DANCING">DANCING<TR><TD><STRONG>GENDER : </STRONG>

<TR><TD><INPUT NAME="GENDER" TYPE="RADIO"

VALUE="MALE" CHECKED>MALE <INPUT NAME="GENDER" TYPE="RADIO"


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VALUE="FEMALE">FEMALE<TR><TD><STRONG>OCCUPATION : </

STRONG><TD><SELECT NAME="OCCUPATION" VALUE="OCCUPATION">

<OPTION SELECTED>STUDENT<OPTION>UNEMPLOYED<OPTION>EMPLOYEE

</SELECT><TR>

<TD><BR><BR>

<TR>

<TD><LABEL><STRONG>EMAIL ID : </STRONG><TD><INPUT NAME="EID" TYPE="TEXT" SIZE=50

MAXLENGTH=30></INPUT><TR><TD><STRONG>PASSWORD : </STRONG><TD><INPUT NAME="PASSWD" TYPE="PASSWORD"

SIZE=15 MAXLENGTH=30></INPUT><TR><TD ALIGN="RIGHT"><INPUT TYPE="RESET" VALUE="RESET"></INPUT><TD ALIGN="LEFT"><INPUT TYPE="SUBMIT" VALUE="SUBMIT"></INPUT></TABLE>

</FORM></BODY>

</HTML>

[root@localhost PHP]# cat studentServer.php

<HTML><HEAD>


</TITLE></HEAD><BODY BGCOLOR="LIGHTGREY">

<?php$name = $_POST["NAME"];$fname = $_POST["FNAME"];$address = $_POST["ADDRESS"];$gender = $_POST["GENDER"];$occupation = $_POST["OCCUPATION"];$eid = $_POST["EID"];$passwd = $_POST["PASSWD"];

?>


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<TABLE BORDER="0" HEIGHT="100%" WIDTH="50%" CELLSPACING="0" CELLPADDING="0"><TR>

<TD><STRONG>NAME : </STRONG><TD><?php print "$name"; ?>

<TR><TD><STRONG>FATHER'S

NAME : </STRONG><TD><?php print "$fname"; ?>

<TR><TD><STRONG>ADDRESS : </STRONG><TD><TEXTAREA NAME="ADDRESS" COLS=50

ROWS=4 WRAP><?php print "$address"; ?></TEXTAREA><TR><TD><STRONG>GENDER : </STRONG><TD><?php print "$gender"; ?><TR>

<TD><STRONG>OCCUPATION : </STRONG><TD><?php print "$occupation"; ?><TR><TD><BR><BR><TR><TD><LABEL><STRONG>EMAIL ID : </STRONG><TD><?php print "$eid"; ?><TR><TD><STRONG>PASSWORD : </STRONG><TD><?php print "$passwd"; ?></TABLE>

<?php

$fileop='/var/www/html/PHP/student.dat';$fp=fopen($fileop,'a') or die('cannot open');if($name=="")

fwrite($fp,"NULL");else

fwrite($fp,$name);fwrite($fp,':');if($name=="")


fwrite($fp,$fname);fwrite($fp,':');if($name=="")


fwrite($fp,$address);fwrite($fp,':');


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if($name=="")fwrite($fp,"NULL");

elsefwrite($fp,$gender);

fwrite($fp,':');if($name=="")


fwrite($fp,$occupation);fwrite($fp,"\n");fclose($fp);

?></BODY></HTML>

[root@localhost PHP]# cat studentReader.php

<HTML><HEAD>


</TITLE></HEAD><BODY BGCOLOR="DARKGREY">

<?php$fileop='/var/www/html/PHP/student.dat';//$fp=fopen($fileop,'r') or die('cannot open');$file_lines=file($fileop);foreach ($file_lines as $words){

print "<BR>record : ";$wordArray=preg_split("/:/",$words);foreach($wordArray as $printWord){

print "$printWord\t";}

}?>

</BODY></HTML>


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14. Write a supermarket form with the following Capabilities :

(i) a text box to accept the customer name(ii) five text boxes to accept five different items and their

corresponding quantities.(iii) Three radio buttons to accept mode of payment.(iv) A text area to accept the address.

Write a php script to process the supermarket form And display the results in the form of a bill as a Table.store the details in a file for future reference.

<HTML><HEAD>

<TITLE>CLIENT FORM</TITLE></HEAD><BODY>

<CENTER><H1>WELCOME TO SAH CANDY STORES</H1></CENTER><HR COLOR="LIGHTGREY" SIZE="3"><FORM name="MYFORM" method="POST" action="http://localhost/PHP/superMarketServer.php"><CENTER><H3>CUSTOMER INFORMATION</H3></CENTER>

<TABLE ALIGN="CENTER"><TR>

<TD>Buyer's Name :<TD><INPUT NAME="NAME" TYPE="TEXT"

SIZE="20"><TR>

<TD>Street Address :<TD><INPUT NAME="STREET" TYPE="TEXT"

SIZE="20"><TR>

<TD>City,State,Pin :<TD><TEXTAREA NAME="CITY_PIN"

COLS="20" ROWS="3"></TEXTAREA>

</TABLE><HR COLOR="LIGHTGREY" SIZE="3"><CENTER><H3>PRODUCT LISTING</H3></CENTER>

<TABLE ALIGN="CENTER" BORDER="7" width="50%"><TR>

<TH>Product Description<TH>Price (in Rs.)<TH>Quantity

<TR><TD>BOURNVILLE<TD ALIGN="CENTER">100.00


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<TD ALIGN="RIGHT"><INPUT NAME="ch001" TYPE="TEXT" SIZE="20" VALUE="0"><TR><TD>DAIRY MILK FRUIT AND NUT<TD ALIGN="CENTER">50.OO<TD ALIGN="RIGHT"><INPUT NAME="ch002"

TYPE="TEXT" SIZE="20" VALUE="0"><TR><TD>CADBURY CELEBRATIONS<TD ALIGN="CENTER">500.OO<TD ALIGN="RIGHT"><INPUT NAME="ch003"

TYPE="TEXT" SIZE="20" VALUE="0"><TR><TD>PERK<TD ALIGN="CENTER">10.OO

<TD ALIGN="RIGHT"><INPUT NAME="ch004" TYPE="TEXT" SIZE="20" VALUE="0"><TR><TD>MUNCH<TD ALIGN="CENTER">20.OO<TD ALIGN="RIGHT"><INPUT NAME="ch005"

TYPE="TEXT" SIZE="20" VALUE="0"></TABLE><HR COLOR="LIGHTGREY" SIZE="3"><CENTER><H3>MODE OF PAYMENT</H3></CENTER><H4><CENTER><INPUT NAME="MODE" TYPE="radio" value="MASTER

CARD" checked>MASTER CARD<INPUT NAME="MODE" TYPE="radio" value="VISA">VISA<INPUT NAME="MODE" TYPE="radio"

value="CHEQUE">CHEQUE</CENTER></H4><HR COLOR="LIGHTGREY" SIZE="3"><CENTER><INPUT TYPE="SUBMIT" VALUE="SUBMIT DETAILS"><INPUT TYPE="RESET" VALUE="RESET DETAILS"></CENTER></FORM>

</BODY></HTML>

[root@localhost PHP]# cat superMarketServer.php

<HTML> <HEAD> <TITLE> CLIENT FORM


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</TITLE> </HEAD> <BODY> <CENTER><H1>SAH CANDY STORES<BR>BILL RECEIPT</H1></CENTER> <HR COLOR="LIGHTGREY" SIZE="3">

<CENTER><?php

print "<H3>CUSTOMER INFORMATION</H3>";$name = $_POST["NAME"];print "$name<BR>";$street = $_POST["STREET"];print "$street<BR>";$citypin=$_POST["CITY_PIN"];print "$citypin<BR>";$mode=$_POST["MODE"];

$quan1=$_POST["ch001"]; $quan2=$_POST["ch002"]; $quan3=$_POST["ch003"]; $quan4=$_POST["ch004"]; $quan5=$_POST["ch005"];

$price1=100.00;$price2=50.00;$price3=500.00;$price4=10.00;$price5=20.00;

if($quan1=="")$quan1=0;if($quan2=="")$quan2=0;if($quan3=="")$quan3=0;if($quan4=="")$quan4=0;if($quan5=="")$quan5=0;

?></CENTER>

<HR COLOR="LIGHTGREY" SIZE="3"><CENTER><H3>ORDER INFORMATION</H3></CENTER><TABLE BORDER="7" width="75%" ALIGN="CENTER">

<TR><TH>Product Code<TH>Product Description<TH>Price (in Rs.)<TH>Quantity<TH>Item Cost (in Rs.)

<TR><TD>ch001<TD>BOURNVILLE<TD ALIGN="CENTER">100.00<TD ALIGN="CENTER"><?php print "$quan1"; ?>


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<TD ALIGN="RIGHT"><?php

$item_cost1=$quan1*$price1;print "$item_cost1";

?><TR>

<TD>ch002 <TD>DAIRY MILK FRUIT AND NUT

<TD ALIGN="CENTER">50.OO<TD ALIGN="CENTER"><?php print"$quan2"; ?><TD ALIGN="RIGHT"><?php


?><TR>

<TD>ch003 <TD>CADBURY CELEBRATIONS



?><TR>

<TD>ch004 <TD>PERK



?><TR>

<TD>ch005 <TD>MUNCH



?></TABLE>

<BR><BR><BR><BR>

<HR COLOR="LIGHTGREY" SIZE="3">


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<CENTER><H3>PAYMENT DETAILS</H3><?php

$total_price=$item_cost1+$item_cost2+$item_cost3+$item_cost4+$item_cost5;$total_qty=$quan1+$quan2+$quan3+$quan4+$quan5;

print "<H4>MODE OF PAYMENT : $mode</H4>";print "<H4>TOTAL QUANTITY: $total_qty</H4>";print "<H4>TOTAL PRICE: $total_price</H4>";$file_var=fopen("superMarket.dat","a") or die("cannot open");fwrite($file_var,$name);fwrite($file_var,":");fwrite($file_var,$street);fwrite($file_var,":");fwrite($file_var,$citypin);fwrite($file_var,":");fwrite($file_var,$quan1);fwrite($file_var,":");fwrite($file_var,$price1);fwrite($file_var,":");fwrite($file_var,$quan2);fwrite($file_var,":");fwrite($file_var,$price2);fwrite($file_var,":");fwrite($file_var,$quan3);fwrite($file_var,":");fwrite($file_var,$price3);fwrite($file_var,":");fwrite($file_var,$quan4);fwrite($file_var,":");fwrite($file_var,$price4);fwrite($file_var,":");fwrite($file_var,$quan5);fwrite($file_var,":");fwrite($file_var,$price5);fwrite($file_var,":");fwrite($file_var,$item_cost1);fwrite($file_var,":");fwrite($file_var,$item_cost2);fwrite($file_var,":");fwrite($file_var,$item_cost3);fwrite($file_var,":");fwrite($file_var,$item_cost4);fwrite($file_var,":");fwrite($file_var,$item_cost5);fwrite($file_var,":");fwrite($file_var,$mode);fwrite($file_var,":");fwrite($file_var,$total_qty);fwrite($file_var,":");fwrite($file_var,$total_price);


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fwrite($file_var,"\n");fclose($file_var);?>

</CENTER><HR COLOR="LIGHTGREY" SIZE="3"><CENTER><H1>THANK YOU<BR>HAVE A NICE

DAY!!!</H1></CENTER></BODY></HTML>

[root@localhost PHP]# cat superMarketReader.php

<HTML><HEAD>


</TITLE></HEAD><BODY BGCOLOR="DARKGREY">

<?php$fileop='/var/www/html/PHP/superMarket.dat';//$fp=fopen($fileop,'r') or die('cannot open');$file_lines=file($fileop);foreach ($file_lines as $words){

print "<BR>record : ";$wordArray=preg_split("/:/",$words);foreach($wordArray as $printWord){

print "$printWord\t";}

}?>

</BODY></HTML>


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15. Write a php script to demonstrate cookies.<HTML>

<HEAD><?php

setcookie("visited","true",time()+5000);// undefines cookie// setcookie("visited","",time()+5000);

?><?php

if(IsSet($_COOKIE["visited"])){

print "welcome again";}else{

print "welcome";}

?><TITLE>

COOKIE DEMONSTRATION</TITLE>

</HEAD><BODY></BODY>

</HTML>


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16. Write a php script to demonstrate server side session Tracking.

<HTML><HEAD>

<?phpsession_start();if(!IsSet($_SESSION["page_num"])){

$_SESSION["page_num"]=1;}$page_num=$_SESSION["page_num"];print "you have visited this page $page_num pages<BR>";$_SESSION["page_num"]++;

?><TITLE>

SESSION DEMONSTRATION</TITLE>

</HEAD><BODY></BODY>

</HTML>


Record(Unix)

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