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Re: strange --version issue

From: John Calcote
Subject: Re: strange --version issue
Date: Wed, 09 Apr 2008 09:44:41 -0600
User-agent: Thunderbird (Windows/20080213)

Gary V. Vaughan wrote:
Probably your shell has cached the location of the previously installed M4. Run 'hash -r' or equivalent at the command line to make it actually look in the path
Thanks Gary, this was indeed the problem.

BTW, what's the purpose of "hash"? I read the help on it, but it only explains how to use it, not what its rationale is. Clearly it's a command cache, but does looking in the search path for an executable take so much more time that a location cache was warranted in the shell?

Thanks again,

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