Linux By Example

The "kill" command

Send signals to a process:

kill -sig <pid>

kill -INT 57        # Send an interrupt signal to pid 57 (same as a Ctrl-C).

kill -HUP 57        # Send a refresh signal to pid 57 (usually a daemon).

kill -KILL 57       # Send the kill signal to pid 57 (same as a kill -9 57).