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From: Ben Bacarisse <ben.usenet@bsb.me.uk>
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Subject: Re: problem with grep
Date: Thu, 19 Apr 2018 17:19:36 +0100
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"Stanke, Fred" <fstanke@nanometrics.com> writes:

> I am not a unix guy, but I've come to depend on emacs after using it
> for decades.
>
> I have a problem, grep does not work.  How do I fix it?
>
> -*- mode: grep; default-directory: "c:/Users/fstanke/Documents/" -*-
> Grep started at Wed Apr 18 17:14:36
>
> grep  -n cycles *.txt NUL
> 'grep' is not recognized as an internal or external command,
> operable program or batch file.
>
> Grep exited abnormally with code 1 at Wed Apr 18 17:14:38

The obvious question is whether you have grep installed.  If you do, it
looks like emacs does not know about it.  There is a group you can
customise that might be worth looking at as well.

I can't be more helpful because I use emacs on Linux, so things are
rather different.

-- 
Ben.