It takes a while for it to really sink in, sometimes. I've hit the ah-ha moment, but I still make mistakes, do things inefficently .... etc. but I'm getting the hang of it. That being said ... your RE: 
if($vacation_str =~ /^.*$HOME\/$library::common{username}\/.vacation.m
+sg/i)

[download]
has a fairly major problem you should be aware of. You start out by saying: 
^  # match the begining of a line
.  # match any character
*  # match 0 or more occourances of the preceeding character.
So, what you've said is ... match any line, the entire line, from begining to end. Oopse?

By default, operators like .* make things 'greedy' -- they match as much as possible. You can make it non-greed -- matchign as little as possible -- like this: 

$myVar =~m/^.*?Help/;

[download]
now you're matching any chars, starting at the begining of the line, up until the regEx engine hits a 'Help'.

Hope that helps.

Oh, and another thing.. you may want to read perlre in the perl docs that come with the standard distribution. Reading through that, slowly, and several times whilst trying the examples in a script really helped me get my poor excuse for a brain wrapped around re's.

- Erik

In reply to Re: a really dumb regular expression question by theAcolyte
in thread a really dumb regular expression question by jcpunk

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