basic regular expressions

[Jose Ramirez_6]

I need to know how make basic regular expresion
and the name and significance of symbol that it use.


thank you.

[James R. Ferguson]

Hi:

A good starting point is the man pages:

# man 5 regexp

Regards!

...JRF...

[harry d brown jr]

/[Aa]nd/

http://gnosis.cx/publish/programming/regular_expressions.html

http://sitescooper.org/tao_regexps.html

http://www.dbnet.ece.ntua.gr/~george/sed/sedtut_1.html

http://linus.chem.wesleyan.edu/documentation/gawk/gawk_17.html#SEC157


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harry

[Helen French]

Hi,

This may help you:

http://www.docs.hp.com/hpux/onlinedocs/B2355-90131/B2355-90131.html


Shiju

[A. Clay Stephenson]

Hi Jose:

I'm going to be a bit of a radical here and suggest that since you are leanring regular expressions anyway, why not learn regular expressions on steroids - use Perl. Just as example, in basic RE to find whitespace you need to look for spaces, tabs, LF's, CR's, and
FF's explicitly. That's not hard, merely tedious. In Perl's re, all of that is simply \s or \S - non-whitespace. Man perlre for details. The nice thing about this approach is that you get the best of grep, awk, sed, and the shell rolled into one and this stuff will also port to Windows.

Food for thought, Clay

[harry d brown jr]

Jose,

I agree with Clay, that "perl" has the best pattern matching available in the free world.


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harry