What is the more easier way to check the pid and kill the pid
 

What is the more easier way to check the pid and kill the pid? I use the ps ux command to list all the pid but the list is too long already and I use the kill pid to kill the process but it is not successful. So I need to use the kill -9 pid to kill the process. What is -9 mean?

Thx.

'ps ux | grep programname' will filter the list for only what you want to find.

-9 is basically the "force termination" signal, the one that bypasses all efforts to safely shut down the process. You should only use it when nothing else works.

Have a look at the killall and pkill commands, both of which can kill processes by name. They can be a bit dangerous though if you have multiple processes with the same name.

Read these manpages for more:

man kill
man pkill
man killall
man 7 signal

Edit: this page has a simple rundown on Unix signals:
http://everything2.com/e2node/unix%2520signals

Thx a lot for your help.

You can also use pidof that gives you the pid of programname:
Regards

the easy way
"killall program-name"

A variation of above

pkill <signal> <application or daemon>