pkill

Signal process by name. Mostly used for stopping processes. More information: https://www.man7.org/linux/man-pages/man1/pkill.1.html.

• 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}}"