Common LinuxCommandsPocket Guide

Setting Kernel Parameters

Kernel parameters for Oracle* i i g

* per MetaLink 169706.1

Setting Process Limits

Add settings to /etc/security/limits.conf:

Adding Interim Swap Space

Adding Interim /tmp Space

Troubleshooting lsof -i sssslsof -p pid netstat -anlptcpdump etherealstrace -p pid

nc

Bash Shell Tweaks

Copyright 2007 Solution Beacon, LLC. All Rights Reserved.

Key System Configuration Files /etc/exports

/etc/fstab

/etc/grub.conf/etc/init.d

/etc/inittab

/etc/lilo.conf/etc/ocfs.conf/etc/nsswitch.conf /etc/profile.d

/etc/raidtab/etc/security/limits.conf

/etc/sysconfig

/etc/sysctl.conf

/etc/updatedb.conf

/etc/xinetd.d

/etc/X11/XF86Config/proc/cpuinfo/proc/meminfo

/proc/mdstat/proc/swaps/proc/sys/kernel/sem

/proc/sys/kernel/shmmax

/proc/sys/kernel/shmmni

System Information chkconfig

service daemon on chroot directory

dmesgkudzuld

lsmodpstree -cashutdown -t 60 -r time mesg

startxscreen Xvfb

File System Management fdformat /dev/fd0H1440fdisk -lfdisk /dev/hdahdparm -i /dev/hda

hdparm -i -d1 -m16 -c3 -k1 /dev/hda

mkbootdisk kernel

mk2efs -m 1 -j /dev/hdb5

mkswap /dev/hdb1mount /dev/cdrom /mnt/cdrom

mount -t vfat /dev/hda9 /mnthda9

mount -o loop file.iso /mnt

mcopy file1 file2

sftp user@host

swapon /dev/hdb1tune2fs c 0 /dev/hda2

tune2fs -l /dev/hda1

umount /filesystem

Network Information dig domain

ifconfig -anetstat -rnhost xxx

route -e

Package Management rpm -qarpm -qil package

rpm -ivh package

rpm -Fvh package

rpm -e packageup2date

User Management $HOME/.bash_profile

$HOME/.bash_logout

chagechage -d0chshgroupadd grouppasswd userpasswdssh user@host

ulimit -auseradd -d home_dir -g primary_group -G

secondary_group username

Backup, Restore and File Transfer curl url

scp user@host:file1 file2

tar -xzvf tarfile tarfile

tar -czvf tarfile

unzip zipfile pattern

zip -r zipfile pattern

ncftp Miscellaneous dircolorsimport

import -

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