kill pid

kill -9 PID # kill -9 94228

Find PID of process to kill with:
ps ax
Then just specify "kill PID" command as for example:
kill 16320
kill -9 16320 	#Force kill in case process is not answering.

#terminate process with SIGKILL signal by process id
kill -9 pid

ps aux | grep chrome

lsof -i:3000           // Change 3000 to whatever your port is!
sudo kill 9 <PID>      // Change <PID> to the Pid number the above command returns 

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