Linux Terminal Commands-4

Linux Terminal Commands-4

SSH commands:

Description	Shortcut key
Connect to host as user	ssh user@host
Connect to host on port port as user	ssh -p port user@host
Add your key to host for user to enable a keyed or passwordless login	ssh-copy-id user@host

User Administration commands:

Description	Shortcut key
Create a new user call accountname	adduser accountname
Give accountname a new password	passwd accountname
Log in as superuser from current login	su
Stop being superuser and revert to normal user	exit

Process Management commands:

Description	Shortcut key
Display your currently active processes	ps
Display all running processes	top
Kill process id pid	kill pid
Kill all processes named proc (use with extreme caution)	killall proc
Lists stopped or background jobs; resume a stopped job in the background	bg
Brings the most recent job to foreground	fg
Brings job n to the foreground	fg n

Stopping & Starting commands:

Description	Shortcut key
Shutdown the system now and do not reboot	shutdown -h now
Stop all processes - same as above	halt
Shutdown the system in 5 minutes and reboot	shutdown -r 5
Shutdown the system now and reboot	shutdown -r now
Stop all processes and then reboot - same as above	reboot
Start the X system	startx