Author: lc-root

Command passwd Changes the password. Syntax passwd [username] Description The passwd command changes your password. It asks for old password, and then the new password. If you are

Command groups groups command shows the groups to which the user belongs. Syntax groups [username] Description groups command displays the names of groups to which the user belongs.

Basic vi commands Command Description TERM = terminal_name export TERM Setting Terminal configuration tput init Initialize terminal as terminal_name vi filename Open the vi text editor to edit

Create New File – Shift-F4 Save File as – F12 Hide Panels (Show Console) – CTRL+O Search File – Ctrl-S

Command killall killall command kills all active processes. Syntax killall [options] Options view option kill command Description Command killall kills all active processes. Implied value send a signal

Command uptime Displays the time of continuous operation of the system. Syntax uptime Description uptime utility displays the current time, time of continuous operation of the system, the

Command top Displays a list of currently executing processes, ordered by the percentage use of CPU time. Syntax top [q] [d interval] Options q: requires top performance with

Command pstree Displays all running processes in a tree. Syntax pstree [options] [process_id] Options -a displays the command line arguments. -c does not compress the subtrees. -l displays

Command ps Displays the status of processes (programs) running in the system. Syntax ps [options] Options [notice]Note that unlike other commands ps command options do not have a

Command kill Kill command sends a signal to the process. Syntax kill [options] id_process Options -Nsignal sends a specified signal (where Nsignal – the number or name). -l