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Linux commands

unzip a tar.gz file
gzip -d httpd.tar.gz

untar a tar.gz2 file
tar -xjvf php.5.1.2.tar.bz2

untar a tar.gz file
tar -zxvf php.5.1.2.tar.gz

login as super user:
sudo su

install a package in debian Linux:
apt-get install gcc

search a package:
apt-cache search <patern>

updagte all:
apt-get update

chmod with group name and permission name.
chmod o+w file_name: adding write permission for others
chmod g+w file_name: adding write permission for group
chmod u+w file_name: adding write permission for user/owner

installing the kernel headers:
apt-get install linux-headers-2.6.12-9-386

copying file to other machine
scp <file_name> <user_id>@<ip_address>:<user_home>/dir
Note: this need ssh get installed.

Installing a debian package
dpkg -i skype.deb

list selected columns by formatting the output with awk
eg: to List only the 1st and 3rd column of ls -al output...
ls -al | awk '{print $1 $3}'

scan disk with FAT32 file system
fsck.vfat /dev/sda5
format disk
mkfs.vfat /dev/sda5 format disk.

format the output of 'top' command..
-press f to go to interactive commands.
-press W to write the current settings to a config file.
now, top will output according to your last written settings.

writing the output of top command to a file..
top -b > top_output.stats

posted by Sris @ 6:05 PM