Is kill function synchronous?

Question

Is the kill function in Linux synchronous? Say, I programatically call the kill function to terminate a process, will it return only when the inten

Answer 1

No, since it doesn't kill anything, it only sends a signal to the process.

By default this signal can even be blocked or ignored.

You can't block kill -9 which represents sending SIGKILL

To wait for the process to die:

while kill -0 PID_OF_THE_PROCESS 2>/dev/null; do sleep 1; done