timelimit executes a command and terminates the spawned process
after a given time with a given signal.  A 'warning' signal
is sent first, then, after a timeout, a 'kill' signal, similar
to the way init(8) operates on shutdown.

Author: Peter Pentchev <roam@ringlet.net>
WWW: http://devel.ringlet.net/sysutils/timelimit/