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kill
Sends a signal to a process, usually related to stopping the process. All signals except for SIGKILL and SIGSTOP can be intercepted by the process to perform a clean exit.
- Terminate a program using the default SIGTERM (terminate) signal:
kill {{process_id}}
- List available signal names (to be used without the
SIG
prefix):
kill -l
- Terminate a program using the SIGHUP (hang up) signal. Many daemons will reload instead of terminating:
kill -{{1|HUP}} {{process_id}}
- Terminate a program using the SIGINT (interrupt) signal. This is typically initiated by the user pressing
Ctrl + C
:
kill -{{2|INT}} {{process_id}}
- Signal the operating system to immediately terminate a program (which gets no chance to capture the signal):
kill -{{9|KILL}} {{process_id}}
- Signal the operating system to pause a program until a SIGCONT ("continue") signal is received:
kill -{{17|STOP}} {{process_id}}
- Send a
SIGUSR1
signal to all processes with the given GID (group id):
kill -{{SIGUSR1}} -{{group_id}}