On Mar 12, 2004, at 9:19 AM, Jeremy C. Reed wrote:

> I never used "-d action" before. I wonder if non-GNU greps support 
> that.


I don't believe there *are* non-GNU greps. The Darwin man pages say 
that grep is a GNU tool and they reference how grep behaves under 
Windows and DOS. If there was a version that came from elsewhere, it 
must have been OS/2 grep or Be grep or something along those lines. 
 From the man pages it does look like -d action works everywhere.

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