pkill

Signal process by name. Mostly used for stopping processes. More information: https://www.manned.org/pkill.

• Kill all processes which match:

pkill "process_name"

• Kill all processes which match their full command instead of just the process name:

pkill -f "command_name"

• Force kill matching processes (can’t be blocked):

pkill -9 "process_name"

• Send SIGUSR1 signal to processes which match:

pkill -USR1 "process_name"

• Kill the main firefox process to close the browser:

pkill --oldest "firefox"