kill PID Option
This option specifies the process ID of the process to be killed.
Syntax:
kill pid
How to Kill a Process in Linux | Kill Command
kill command in Linux (located in /bin/kill), is a built-in command which is used to terminate processes manually. kill command sends a signal to a process that terminates the process. If the user doesn’t specify any signal that is to be sent along with the kill command, then a default TERM signal is sent that terminates the process.