On Wed, Mar 15, 2017 at 07:30:57AM -0500, Martin McCormick wrote: > Thanks for any good explanations. I even did a which sox on both > systems and there is only one on each. I can't answer the rest of this email, but for this paragraph, you would get better results using bash's "type -a sox". That will show you all of them, in the event there's more than one. wooledg@wooledg:~$ type -a echo echo is a shell builtin echo is /bin/echo