To know the ip address of the machine
$ifconfig
To view list of previously typed commands in command prompt
$history | grep <word that need to be searched>
To Know the ip address of the website
$host site-name
To list all the process running in a machine
$ps aux
To kill a process that is running
$kill -9 the process code
To know which process consumes more space
$top
To know how much space the folder occupies
$du -sh .

Synthia, these commands are very useful.
The command ‘ifconfig’ is for Linux o.s. only, For Windows o.s. it is ‘ipconfig’, To get the detailed information about the System IP address it is, ‘ipconfig /all’.
Keep posting such useful stuff.
Regards,
Shruti
Comment by Shruti — February 21, 2008 @ 7:11 am