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. More information: https://manned.org/kill.

• Terminate a program using the default SIGTERM (terminate) signal:

kill process_id

• List signal values and their corresponding names (to be used without the SIG prefix). The available options may depend on the kill implementation:

kill -l|-L|–table

• Terminate a background job:

kill %job_id

• 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