macOS Kill Process with Terminal

To View All Processes:

Type

ps -ax

at Terminal’s command prompt to list every process running, along with additional details such as the PID, the elapsed time running, and the process name and location

To Find a Specific Process:

Type

ps -ax | grep .

To Terminate (Kill) a Process:

Once you know the process ID, killing it using Terminal is very simple. There are essentially two easy ways to kill a process:

• By PID: the simplest way is with the kill command followed by the PID, which causes the selected process to terminate immediately. In an example, kill 14530 does the job and causes the process to exit immediately

kill <PID>

• By name: this method uses the killall command to kill all the processes that contain that name. For example killall Skype will terminate all the processes that have Skype in their name

Source:

http://www.chriswrites.com/how-to-view-and-kill-processes-using-the-terminal-in-mac-os-x/