you can kill processes running in your unix box by just simply using “KILL” and killall methods some of these listed below. First Find process id then use kill command and provide process id to kill process in unix or any nix like systems (mac) .

Find the Process ID

open terminal

ps aux 

# kill signal PROCESS_ID ( e.g. ) 

kill -9 4156 

# KILLALL PROCESS  ( e.g. ) 

killall ruby 

Or open system monitor. And find the process then right click and kill it