Find and kill PID.txt

How to Find Process ID or Process Name

Command:
ps [options], ps -a

The most common options to add to ps are:

    -a. View processes of all users rather than just the current user.
    -u. Provide detailed information about each of the processes.
    -x. Include processes that are controlled not by users but by daemons.
 
How to Kill a Process

Command:
killall [process], killall -i "process"

The killall command accepts several options:

    -e. Find an exact match for the process name.
    -I. Ignore the case when trying to find the process name.
    -i. Ask for additional confirmation when killing the process.
    -u. Only kill processes owned by a specific user.
    -v. Report back on whether the process has been successfully killed.

Command:
pkill [options] [pattern]

pkill options include:

    -n. Only kill the newest of the processes that are discovered.
    -o. Only kill the oldest of the processes that are discovered.
    -u. Only kill the processes owned by the specified user.
    -x. Only kill the processes that match the pattern exactly.
    -signal. Send a specific signal to the process, rather than SIGTERM.


Command:
kill [process ID]

The kill command kills a single process at a time with the given process ID. It sends a SIGTERM signal instructing a process to stop. It waits for the program to run its shutdown routine.

Command:
kill -9 [processID]

The kill -9 command sends a SIGKILL signal to a service, shutting it down immediately. An unresponsive program ignores a kill command, but it shuts down whenever a kill -9 command is issued. Use this command with caution since it bypasses the standard shutdown routine, and any unsaved data will be lost.