Linux commands

List of Unix programs here

http://en.wikipedia.org/wiki/Nice_(Unix) – Bottom of this page has a useful list of unix/linux commands

nohup <command> &

used to run commands even after the user logs off.

at 9pm <command>

user can run a command at a designated time

cron    [/etc/crontab stores the cron config. crontab -e can be used to edit the cron]

schedule a job to run periodically at pre-defined intervals.

Advertisements

Linux users

The information on the system’s users is included in the following files –

/etc/passwd

/etc/shadow

/etc/group

/etc/gshadow

Commands:

chsh : change the user login shell

chfn : change the user information present in the /etc/passwd comment file

passwd  : change a user’s password.

su : a kind of identity change. It is used by both users and by the root to change the current user.