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Date: Thu, 20 Feb 2014 10:41:51 -0500
From: Ken Brown <kbrown@cornell.edu>
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Subject: Re: $PATH contains dot but unclear where it comes from
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On 2/20/2014 9:12 AM, Robert Klemme wrote:
> 2. only bash invoked as bash shows it - it's not shown when invoked as sh.exe

This fact should enable you to track down the problem.  The bash manual 
explains how it behaves differently when invoked as sh.exe.  I don't 
remember the details, but I think one difference is that different 
startup files are read.

Ken

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