From: Robert Klemme Date: 2009-08-24T18:38:42+09:00 Subject: Re: Checking if a specific Unix/Linux command exists 2009/8/23 Hunt Jon : > Phil, > > That "which" command should work fine. Thanks a lot! In bash my preferred check is "type -a {command}" because it will give you also functions and aliases. Cheers robert -- remember.guy do |as, often| as.you_can - without end http://blog.rubybestpractices.com/