RunSighup will take the given executable and run sighup on it @param executable - executable to run sighup on @return any error from running.

RunSigusr1 will take the given executable and run Sigusr1 on it @param executable - executable to run Sigusr1 on @return any error from running.

SendSignal will use a pid and send a signal to that pid @param executable string - the binary process name @param signal syscall.Signal - the signal type to send.

Shutdown is placeholder for shutting down util.

Startup is placeholder for starting util.