regexp manuals/tutorials/books for beginners ?

[David Tilbrook]

Walter Dnes wrote:
>   One of my co-workers has a job that includes retrieving portions of
> flat-files for client requests.  She logs on to an HPUX system, and runs
> scripts that make heavy use of regexps+grep.  I've been writing simple
> (and not-so-simple) scripts for her.  She can make simple adjustments,
> but it would be nice if she could do more on her own.
> 
>   She can navigate her way around the unix command line sufficient for
> her needs, and she's reasonably bright with a university degree, etc.
> What training materials are there for a beginner to learn regexps?  A
> full-blown "Intro to Unix" course would probably be "a mile wide and an
> inch deep", i.e. too broad, and not covering regexps in enough detail.
> 
ed(1) gives a one page description of the original rxp plus the
GNU extensions.


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