Process Command In Linux

Chapter: Linux Commands Last Updated: 16-11-2019 17:28:08 UTC

Program:

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ubuntu@ubuntu:~$ ps -a | grep -i "firefox"  // ps command is used to view process and grep command to search for firefox process
 31721 tty2     00:00:06 firefox

ubuntu@ubuntu:~$ ps -a
   PID TTY          TIME CMD
   871 tty1     00:00:00 gnome-session-b
   886 tty1     00:00:04 gnome-shell
  1171 tty1     00:00:09 Xwayland
  1333 tty1     00:00:00 ibus-daemon
  1394 tty1     00:00:00 ibus-dconf
  1399 tty1     00:00:00 ibus-x11
  1421 tty1     00:00:00 gsd-xsettings
  1422 tty1     00:00:00 gsd-a11y-settin
  1427 tty1     00:00:00 gsd-clipboard
  1428 tty1     00:00:00 gsd-color
  ...........
  ...........


ubuntu@ubuntu:~$ pgrep firefox // pgrep command is used to get the process id running process.
31721

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Output

Notes:

• Command in linux to view running process is "ps". When typing ps command in linux it will list all the current running process.
• ps -a will all the list of details of task running in the system with name.
• Syntax : ps [options]
• Another command to get the process id of running process is "pgrep", by using the command you will get the process number of running process. For example if you type pgrep firefox, it will show the process number of firefox running. If you want to kill the process you can type "kill processNumber".
• For more information you can check the manual of command by typing man ps.
• If you want to search particular process, you can search process by using grep command after the process command.
• For example if you want to search firefox you can ps -a | grep -i "firefox" then it will list all running process which contains firefox.

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