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#!/usr/bin/perl -w
use strict;
...
    warn "Don't know how to handle $_\n";
  };
};

  if (m!^((?:\d+)|(?:\d+/\d+)|(\N\+1\))|\d*[MN])\s!) {
    print "Found $1 in $_";
  };

m!\d+(/\d+)?! # Here, we use capturing parentheses for legibility
m!\d+(?:/\d+)! # Noncapturing parentheses for programmer-ease

perl -MHTTP::Daemon -MHTTP::Response -MLWP::Simple -e ' ;    # The  
$d = new HTTP::Daemon and fork and getprint $d->url and exit;#spider
($c = $d->accept())->get_request(); $c->send_response( new   #in the
HTTP::Response(200,$_,$_,qq(Just another Perl hacker\n))); ' #  web