Linux : how to kill a process code example

Example 1: ubuntu kill process

pidof slack 
9734 9718 9716 9708 9622 9619
sudo kill -9 process_id

pidof apt 
9734 9718 9716 9708 9622 9619
sudo kill -9 9734 9718 9716 9708 9622 9619

Example 2: how to kill a process with linux

ps ux #list the running proccess
kill -9 <PID>

Example 3: linux kill process

kill -9 3827

kill -9 3919

kill -9 10764

kill -9 11679

Example 4: how to kill a process in linux

kill -KILL PIDnumber ... for example, kill -KILL 12345