Begining with the easier things:
* Changing Password: $passwd
* Adding user to root :
$adduser jolly .Usually in the /sbin/adduser directory.
*Multiple terminals: $ who :this command gives the terminal name and also gives the IP address of the computer that everybody is logged to !!!
* ls :lists all the files in the directory.
ls-a : lists even the files that begin with
period. These files are created by LINUX for you!!!
ls -l :gives the detailed description of
each files.
Other parameters: ls -r, ls -m
*Manual Help: man
Ex man ls
Finding keywords: man -k string :Like Google !!! Neat and simple
* Command to find out who all are FINGERing and sloging on the computer even at night :
$finger : This command lists all the people logged on to the server at that moment.
* $finger sudeepg :This command tells you if sudeepg is still logged on. And if not when did he last log in.
*$mesg y :This makes your terminal active to receive talk message from others You can put this command permanently in your .bashrc file (more about it later) . Similarly, $mesg n makes your terminal inactive for talking, and now you cannot recieve talk messages from others.
* $ talk sudeepg : you can send talk message to sudeepg by this command.This will initiate talk between you and sudeepg ,when the conatct is established.
*Another Very Interesting Command:more
Ex. ls -l /sudeepg | more
other similar command:Less
*alias: This command converts long boring commands to sweet short ones!
Ex $ alias f ="finger" ;Now you can just type f on the prompt to invocate finger command.Therefore ,you donn't have to type this command again and again.