[Tutorial] How to check and kill running processes in Ubuntu

Check processes

If you want to see what processes are running use the command

ps -ef

If you want to look up all processes by user bob, this might help

pgrep -l -u bob

or

ps -ef | grep bob

 Kill processes

To kill all the processes that you have the permission to kill, simply run the command

kill -15 -1

 or

kill -9 -1

 depending on the desired behavior (use man kill for details)

To kill a specific process, say, firefox, simply run

pkill firefox

 or

killall firefox

 depending on the behavior you want: What's the difference between 'killall' and 'pkill'?

 

Reference:

Ask Ubuntu:

http://askubuntu.com/questions/104903/how-do-i-kill-processes-in-ubuntu