process related commands

For this purpose Use this Command Examples*

To see currently running process ps $ ps

To stop any process by PID i.e. to kill process
kill {PID} $ kill 1012

To stop processes by name i.e. to kill process killall
{Process-name} $ killall httpd

To get information about all running process ps -ag $ ps -ag

To stop all process except your shell kill 0 $ kill 0

For background processing (With &, use to put particular command and program in
background) linux-command & $ ls / -R | wc -l &

To display the owner of the processes along with the processes ps
aux $ ps aux

To see if a particular process is running or not. For this purpose you
have to use ps command in combination with the grep command
ps ax | grep process-U-want-to see

For e.g. you want to see whether Apache web server process is running
or not then give command
$ ps ax | grep httpd

To see currently running processes and other information like memory
and CPU usage with real time updates. top
See the output of top command.
$ top

Note that to exit from top command press q.
To display a tree of processes pstree $ pstree

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