Unix Final Project

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Assignment no.1

H.C.F and L.C.M of two positive integers

Program Code :-

echo -n "Enter 1st no.-- "

read a

echo -n "Enter 2nd no.-- "

read c

m=$a

n=$c

d=` expr $m \* $n`

while [ $m -ne $n ]

do

if [ $m -gt $n ]; then

m=` expr $m - $n`

else

n=` expr $n - $m`

fi

done

e=` expr $d / $m`

echo "LCM of $a and $c is $e"

echo "GCD of $a and $c is $m"



INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh lcmgcd.sh

Enter 1st no.-- 20

Enter 2nd no.-- 26

LCM of 20 and 26 is 260

GCD of 20 and 26 is 2



Assignment no.2

First N Fibonacci number

Program code:-

echo -n "Enter the term: "

read n

a=0

c=1

if [ $n -eq 0 ]; then

echo "NO TERM TO DISPLAY OF THE SERIES"

fi

if [ $n -eq 1 ]; then

echo "::::::::::THE FIBONACCI SERIES IS BELOW::::::::::"

printf "\t\t\t$a\n"

fi

if [ $n -gt 2 ]; then

echo "::::::::::THE FIBONACCI SERIES IS BELOW::::::::::"

printf "\t\t\t$a\n"

printf "\t\t\t$c\n"

fi

m=` expr $n - 2`

while [ $m -gt 0 ]

do

d=` expr $a + $c`

a=$c

c=$d

m=` expr $m - 1`



printf "\t\t\t$d\n"

done

if [ $m -eq 0 ]

then

echo "::::::::::::::::END OF THE SERIES::::::::::::::::"

fi

INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh fibonacci.sh

Enter the term: 9

::::::::::THE FIBONACCI SERIES IS BELOW::::::::::

0

1

1

2

3

5

8

13

21

::::::::::::::::END OF THE SERIES::::::::::::::::



Assignment no.3

Maximum, minimum, sum and average among N given value

Program code:-

echo -n "Enter no. of numbers you want to insert:--"

read n

echo -n "Enter 1st no. "

read a

max=$a

min=$a

sum=$a

m=` expr $n - 1`

i=1

while [ $m -ge $i ]

do

echo -n "Enter next no. "

read c

sum=` expr $sum + $c`

if [ $max -lt $c ]

then

max=$c

fi

if [ $min -gt $c ]

then

min=$c

fi

i=` expr $i + 1`



done

d=` expr $sum / $n`

printf "maximum no is $max\nminimum no is $min\n"

printf "Sum is $sum\naverage is $d\n"

INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh mmsa.sh

Enter no. of numbers you want to insert:--5

Enter 1st no. 98

Enter next no. 56

Enter next no. 78

Enter next no. 12

Enter next no. 65

maximum no is 98

minimum no is 12

Sum is 309

average is 51



Assignment no.4

Check a number is prime or not

Program code:-

echo -n "Enter the no. to check it is prime or not:-- "

read n

i=2

m=` expr $n / 2`

printf "\nAFTER CHECKING THE RESULT IS BELOW\n"

while [ $i -le $m ]

do

j=` expr $n % $i`

if [ $j -eq 0 ];then

printf "\n"

echo "$n is not prime as it is first divided by $i"

i=$n

else

i=` expr $i + 1`

fi

done

if [ $i -ne $n ];then

printf "\n"

echo "$n is prime as it is divided only by 1 and $n"

fi

printf "\n"



INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh primecheck.sh

Enter the no. to check it is prime or not:-- 35

AFTER CHECKING THE RESULT IS BELOW

35 is not prime as it is first divided by 5

[Pritam-Project@mukherjee ~]$ sh primecheck.sh

Enter the no. to check it is prime or not:-- 97

AFTER CHECKING THE RESULT IS BELOW

97 is prime as it is divided only by 1 and 97



Assignment no.5

Check a string is palindrome or not

Program code:-

echo "THIS PROGRAM IS IMPLEMENTED TO CHECK A STRING IS PALINDROME

OR NOT"

echo -n "Enter a string to check it: "

read str

len=ècho $str|wc -c`

l=$len

printf "\n"

printf "::::::AFTER CHECKING THE RESULT IS BELOW:::::::\n"

echo -n "THE ENTERED STRING "

for((i=1;i<=èxpr $len/2`;i++))

do

l=èxpr $l - 1`

a=ècho $str|cut -c $i`

b=ècho $str|cut -c $l`

if [ $a != $b ]

then

echo "IS NOT PALINDROME "

exit 1

fi

done

echo "IS PALINDROME"



INPUT OUTPUT

Pritam-Project@mukherjee ~]$ sh strpallin.sh

THIS PROGRAM IS IMPLEMENTED TO CHECK A STRING IS PALINDROME OR NOT

Enter a string to check it: madam

::::::AFTER CHECKING THE RESULT IS BELOW:::::::

THE ENTERED STRING IS PALINDROME

Pritam-Project@mukherjee ~]$ sh strpallin.sh

THIS PROGRAM IS IMPLEMENTED TO CHECK A STRING IS PALINDROME OR NOT

Enter a string to check it: mukherjee

::::::AFTER CHECKING THE RESULT IS BELOW:::::::

THE ENTERED STRING IS NOT PALINDROME



Assignment no. 6

Find the length of a given string

Program code:-

echo ":::THIS PROGRAM IS IMPLEMENTED TO COUNT THE STRING

LENGTH:::"

echo -n "Enter a string to count length: "

read str

len=`echo $str|wc -c`

len=` expr $len - 1`

printf "\nThe length of the entered string is $len\n"

INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh strlength.sh

:::THIS PROGRAM IS IMPLEMENTED TO COUNT THE STRING LENGTH:::

Enter a string to count length: abchyegdth

The length of the entered string is 10



Assignment no. 7

Reverse a string i.e. RAM IS A GOOD BOY is displayed as BOY GOOD

A IS RAM

Program code:-

echo -n "Enter the string:--- "

read a

echo ""

b=` echo "$a"|rev`

i=1

c=` echo "$b"|cut -d" " -f$i|rev `

echo "AFTER REVERSING THE STRING IS:----"

echo ""

while [ -n "$c" ]

do

printf "$c "

i=` expr $i + 1`

c=` echo "$b"|cut -d" " -f$i|rev `

done

printf "\n"



INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh revstr.sh

Enter the string:--- RAM IS A GOOD BOY

AFTER REVERSING THE STRING IS:----

BOY GOOD A IS RAM



Assignment no.8

File name as command line argument and searches and outputs

whether it exists. If it exists then RWX permission will be

displayed

Program code:-

file=$1

ls -l > temp

str=`grep "$1" temp`

if [ $? -eq 0 ]

then

echo "::::::::::::::The file exists::::::::::::::"

printf "The permissions of the file are:"

str1=`ls -l $1|cut -f1 -d" "`

echo "$str1"

else

echo "The file dose not exists"

echo "So, no permissions to display"

fi



INPUT OUTPUT

Pritam-Project@mukherjee ~]$ sh filesearch.sh local

::::::::::::::The file exists::::::::::::::

The permissions of the file are:-rw-rw-r--.

[Pritam-Project@mukherjee ~]$ sh filesearch.sh test1

The file dose not exists

So, no permissions to display



Assignment no.9

sort N integers

Program code:-

echo "-----THIS PROGRAM IS IMPLEMENTED FOR SORTING IN ASSINDING

ORDER OF ARRAY ELEMENT-----"

echo -n "Enter the no. of elements for the array:-"

read n

for((i=0;i<n;i++))

do

read -p "a[$i]:-" a[$i]

done

for((i=0;i<n;i++))

do

k=` expr $n - $i - 1`

for((j=0;j<k;j++))

do

l=` expr $j + 1`

if [ $[a[$j]] -gt $[a[$l]] ]

then

t=$[a[$j]]

a[$j]=$[a[$l]]

a[$l]=$t

fi

done

done

echo "::::::AFTER SORTING::::::"



echo "THE ARRAY ELEMENTS ARE:-"

for((i=0;i<n;i++))

do

printf "\t$[a[$i]]\n"

done

INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh arraysort.sh

-----THIS PROGRAM IS IMPLEMENTED FOR SORTING IN ASSINDING ORDER OF

ARRAY ELEMENT-----

Enter the no. of elements for the array:-6

a[0]:--4

a[1]:-2

a[2]:--9

a[3]:-5

a[4]:--7

a[5]:-6

:::::AFTER SORTING::::::

THE ARRAY ELEMENTS ARE:-

-9

-7

-4

2

5

6



Assignment no.10

value of the series 1!+2!+3!+.......+n!

Program code:-

fact()

{

f=1

for((j=1;j<=$1;j++))

do

f=` expr $f \* $j`

done

return $f

}

echo -n "Enter the term :-"

read n

s=0

echo "AFTER CALCULATION THE RESULT IS------"

for((i=1;i<=n;i++))

do

fact $i

c=$?

s=` expr $s + $c`

if [ $i -ne $n ];then

printf "$i!+"

else

printf "$i!="



fi

done

echo " $s "

INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh sumfact.sh

Enter the term :-5

AFTER CALCULATION THE RESULT IS------

1!+2!+3!+4!+5!= 153



Assignment no.11

Check a given user name is valid or not

Program code:-

echo "THIS PROGRAM IS IMPLEMENTED TO CHECK A USER IS VALID OR NOT"

echo -n "Enter The USER NAME:-"

read user

who>a

f=0

while read line

do

u=` echo "$line"|cut -d " " -f1`

if [ "$u" = "$user" ]

then

f=1

break

fi

done<a

echo "AFTER CHECKING USER LIST FROM 'WHO' COMMAND, THE RESULT IS:-"

if [ $f -eq 1 ]

then

echo "The user name is valid"

else

echo "The user name is not valid"

fi



INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh user.sh

THIS PROGRAM IS IMPLEMENTED TO CHECK A USER IS VALID OR NOT

Enter The USER NAME:-Pritam-Project

AFTER CHECKING USER LIST FROM 'WHO' COMMAND, THE RESULT IS:-

The user name is valid

[Pritam-Project@mukherjee ~]$ sh user.sh

THIS PROGRAM IS IMPLEMENTED TO CHECK A USER IS VALID OR NOT

Enter The USER NAME:-mukherjee

AFTER CHECKING USER LIST FROM 'WHO' COMMAND, THE RESULT IS:-

The user name is not valid



Assignment no.12

print prime numbers within a range Program code:-

echo "THIS PROGRAM IS IMPLEMENTED TO FIND PRIME NUMBERS IN A GIVEN

RANGE"

echo -n "Enter the LOWER BOUND::"

read lb

echo -n "Enter the UPPER BOUND::"

read ub

if [ $ub -eq $lb ] ;then

echo "There is no range"

exit 1

fi

if [ $lb -eq 1 ] ;then

lb=` expr $lb + 1`

fi

f=0

for((i=lb;i<=$ub;i++)) ;do

for((j=2;j<$i;j++)) ;do

f=0

a=` expr $i % $j`

if [ $a -eq 0 ] ; then

f=1

break

fi

done



if [ $f -eq 0 ] ;then

echo " Prime nos. in the given range are: "

printf "$i "

fi

done

INPUT OUTPUT

THIS PROGRAM IS IMPLEMENTED TO FIND PRIME NUMBERS IN A GIVEN

RANGE

Enter the LOWER BOUND::1

Enter the UPPER BOUND::90

PRIME NOS. IN THE GIVEN RANGE ARE:

2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89



Assignment no.13

write a positive integer in the reverse order

Program code:-

echo "::::::THIS PROGRAM IS IMPLEMENTED TO REVERSE AN INTEGER::::::"

echo -n "Enter the integer to reverse:-"

read n

c=` echo $n|rev`

echo ""

echo -n "After the reverse, the result is :-"

echo $c

INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh intrev.sh

::::::THIS PROGRAM IS IMPLEMENTED TO REVERSE AN INTEGER::::::

Enter the integer to reverse:-9546215

After the reverse, the result is :-5126459



Assignment no.14

sum of the digits of a given number

Program code:-

echo "THIS PROGRAM IS IMPLEMENTED TO CALCULATE THE SUM OF THE

DIGIT OF AN INTEGER"

echo -n "Enter the no. "

read n

a=$n

sum=0

while [ $a -gt 0 ]

do

c=` expr $a % 10`

a=` expr $a / 10`

sum=` expr $sum + $c`

if [ $a -gt 0 ]

then

printf "$c+"

else

printf "$c="

fi

done

echo $sum

echo "The sum of the digit of $n is $sum"



INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh sumdigit.sh

THIS PROGRAM IS IMPLEMENTED TO CALCULATE THE SUM OF THE DIGIT OF

AN INTEGER

Enter the no. 644789

9+8+7+4+4+6=38

The sum of the digit of 644789 is 38



Assignment no.15

print the grade of a student based on average obtained from

the total marks of 4 subjects

Program code:-

echo -n "Enter Student name :-"

read name

echo "Four subjects are :-"

read -p "SUBJECT1 : " sub1




echo "Enter the marks of the subjects:-"

read -p "$sub1=" m1

read -p "$sub2=" m2

read -p "$sub3=" m3

read -p "$sub4=" m4

echo -n "Total marks of the 4 subjects is $m1+$m2+$m3+$m4="

m=` expr $m1 + $m2 + $m3 + $m4`

echo $m

echo ""

echo -n "Average marks is :-"

avg=` expr $m / 4`

echo $avg

echo ""

if [ $avg -ge 90 ];then

echo "$name obtained GRADE 'A+'"



elif [ $avg -ge 80 ];then

echo "$name obtained GRADE 'A'"


echo "$name obtained GRADE 'B+'"


echo "$name obtained GRADE 'B'"


echo "$name obtained GRADE 'C'"


echo "$name obtained GRADE 'D'"

else

echo "$name failed the exam"

fi



INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh grade.sh

Enter Student name :-Pritam Mukherjee

Four subjects are :-

SUBJECT1 : Computer

SUBJECT2 : Mathematics

SUBJECT3 : Physics

SUBJECT4 : English

Enter the marks of the subjects:-

Computer=75

Mathamatics=90

Physics=65

English=75

Total marks of the 4 subjects is 75+90+65+75=305

Average marks is :-76

Pritam Mukherjee obtained GRADE 'B+'



Assignment no.16

print the current date and time

Program code:-

echo "THIS PROGRAM IS IMPLEMENTED TO SHOW THE CURRENT DATE AND

TIME"

echo -n "CURRENT DATE IS :-"

echo `date +%D`

echo -n "CURRENT TIME IS :-"

echo ` date +%T`

INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh datetime.sh

THIS PROGRAM IS IMPLEMENTED TO SHOW THE CURRENT DATE AND TIME

CURRENT DATE IS :-12/03/11

CURRENT TIME IS :-11:22:40



Assignment no.17

sum of individual row element and column element of 3*3

matrix input

Program code:-

echo -n "Enter the number of row or column: "

read row

declare -a array

rowSquare=èxpr $row \* $row`

adjustment=0

for (( i = 0; i < $row; i++ ))

do

k=0

for (( j = 0; j < $rowSquare; j += $row ))do

index=èxpr $i + $j + $adjustment`

adjustment=èxpr $adjustment - $row + 1`

echo -n "Enter the value of Aèxpr $i + 1`èxpr $k + 1`: "

read array[index]

k=èxpr $k + 1`

done

adjustment=èxpr $adjustment + $rowSquare - 1`

done

echo

echo "The given matrix is: "

adjustment=0

for (( i = 0; i < $row; i++ ))

do

for (( j = 0; j < $rowSquare; j += $row ))

do

index=èxpr $i + $j + $adjustment`

adjustment=èxpr $adjustment - $row + 1`

echo -n "${array[index]} "

done

adjustment=èxpr $adjustment + $rowSquare - 1ècho

done

adjustment=0

for (( i = 0; i < $row; i++ ))

do

colSum=0

rowSum=0



for (( j = 0; j < $rowSquare; j += $row ))

do

colIndex=èxpr $i + $j`

colSum=èxpr $colSum + ${array[colIndex]}`

rowIndex=èxpr $i + $j + $adjustment`

rowSum=èxpr $rowSum + ${array[rowIndex]}àdjustment=èxpr $adjustment - $row + 1`

done

adjustment=èxpr $adjustment + $rowSquare - 1`

printf "Sum of èxpr $i + 1`th column: $colSum\n"

printf "Sum of èxpr $i + 1`th row: $rowSum"

done

echo -n "Press enter to continue or any other key to exit..."

read key

exit 0



INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh matrix.sh

Enter the number of row or column: 3

Enter the value of A11: 1









The given matrix is:

1 2 3

4 5 6

7 8 9

Sum of 1th column: 12

Sum of 1th row: 6


Sum of 2th row: 15


Sum of 3th row: 24

Press enter to continue or any other key to exit...



Assignment no.18

execute good morning, good afternoon, good evening and good

night as per the system time

Program code:-

time=`date |tr -s ' '|cut -d" " -f4 | cut -d":" -f1`

if [ $time -gt 0 -a $time -le 12 ]; then

printf "\n good morning"

fi


printf "\n good afternoon"

fi


printf "\n good evening"

fi

if [ $time -gt 20 -a $time -le 24 ];then

printf "\ngood night"

fi

INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh time.sh

good morning



Assignment no.19

check a given user name is login in the system or not

Program code:-

echo "THIS PROGRAM IS IMPLEMENTED TO CHECK A USER IS VALID OR NOT"echo -n "Enter The USER NAME:-"read userwho>a f=0while read line do u=` echo "$line"|cut -d " " -f1`if [ "$u" = "$user" ]then

f=1break

fidone<aecho "AFTER CHECKING USER LIST FROM 'WHO' COMMAND, THE RESULT IS:-"

if [ $f -eq 1 ]then

echo "The user is logged in"else

echo "The user is not logged in"fi

INPUT OUTPUT

[Pritam-Project@mukherjee ~]$ sh chklogin.sh

THIS PROGRAM IS IMPLEMENTED TO CHECK A USER IS VALID OR NOTEnter The USER NAME:-Pritam-ProjectAFTER CHECKING USER LIST FROM 'WHO' COMMAND, THE RESULT IS:- The user is logged in

[Pritam-Project@mukherjee ~]$ sh chklogin.shTHIS PROGRAM IS IMPLEMENTED TO CHECK A USER IS VALID OR NOT

Enter The USER NAME:-mukherjeeAFTER CHECKING USER LIST FROM 'WHO' COMMAND, THE RESULT IS:-The user is not logged in

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