How to kill all processes returned by pgrep

pkill python

Short and sweet, man pkill for details.

You can try:

pgrep python | xargs kill

@tink has the correct answer, but I wanted to add that you want to make sure you are using the correct format for your machine. If you are using a Linux machine, pkill python is correct, but if you are using a Mac terminal, you will want to use pkill Python. So the most correct answer would be this:

pkill <process_name>

where <process_name> is the case-sensitive name of the process to kill.

Note: I understand that the tags for this question were related to Ubuntu Linux, but I wanted to clarify this for anyone that has a different machine but had this exact question (like myself).

If pkill is a bit too radical for your tastes and you prefer to select which entries of the pgrep listing you want to kill, you can have a look at ezkill <https://github.com/Kraymer/ezkill> that i wrote.