[Chicago-talk] regural expression question?
Joshua McAdams
joshua.mcadams at gmail.com
Thu Mar 30 07:01:10 PST 2006
> > I have a little script that finds the line which
> > contains a six digit number begining with 1 or
> > greater. I know that $_ represents the line,
> > however, I am having trouble figuring out how to
> > save that number once it's found (without everything
> > else in the line).
> >
> > #!/usr/bin/perl -w
> >
> > @ARGV = "/home/richard/test/out.txt";
> > while (<>) {
> > if ( /\b[123456789][0-9][0-9][0-9][0-9][0-9]\b/
> > ) {
> > print "Found\n" . $_ . "\n";
> > }
> > }
> >
Put some parenthesis around the expression...
if ( /\b([123456789][0-9][0-9][0-9][0-9][0-9])\b/ ) {
print "Found\n" . $1 . "\n";
}
I think that you could tighten up the expression a little too...
if ( /\b([1-9]\d{5})\b/ ) {
print "Found\n" . $1 . "\n";
}
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