Comments on: A simple script that waits for a process to complete and then executes a command

By: Nick

Nick — Mon, 12 Sep 2011 12:24:34 +0000

@David,

wait only works for processes spawned by the current shell.

build_helper.sh: line 6: wait: pid 32015 is not a child of this shell

This script seems very helpful e.g. when using “service stop” and waiting for its pid to exit as indicated by a pidfile from /var/local/run/.pid.

Nick

Anonymous — Fri, 05 Mar 2010 07:45:00 +0000

What if I have process name only and didn’t know process ID??

Parvathi — Thu, 19 Feb 2009 11:29:00 +0000

Very helpful… and very clear.
Thanks for the script…

David — Sat, 29 Nov 2008 18:56:00 +0000

This is very intriguing, but I wonder why you didn’t use the wait command?

$ date ; sleep 30 &
Sat Nov 29 12:53:58 CST 2008
[1] 7695
$ wait %1
$

Simple.