kill in UNIX

The kill command allows you to kill one process ID or multiple process IDs.
Syntax:
kill [options] IDs


How to get the ID first ?
ps -ef| grep process_identifier // will give you PID


OptionsUsage
-lLists the signal names.
-signalThe signal number of name. Using the signal number of 9, means that the kill is absolute.

Example:
Here, we use "9" to Forced termination. Please find the below table for more options.
kill -9 78689

NumberNameDescriptionUsed for
0SIGNULLNullCheck access to pid
1SIGHUPHangupTerminate; can be trapped
2SIGINTInterruptTerminate; can be trapped
3SIGQUITQuitTerminate with core dump; can be
9SIGKILLKillForced termination; cannot be trapped
15SIGTERMTerminateTerminate; can be trapped
24SIGSTOPStopPause the process; cannot be trapped
25SIGTSTPTerminalstop Pause the process; can be
26SIGCONTContinueRun a stopped process