Try negative look ahead.

my @str = qw/ a.jpg b.gif c.png d.txt e.jpeg a.jpg.3 /;

for my $str (@str) {
  if ($str =~ /.*?\.(?!gif|jpe?g)/) {
    print "matched: $str\n";
  }
}

__END__

# output is
matched: c.png
matched: d.txt
matched: a.jpg.3

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In reply to Re: Negative expressions with alternation in ProxyRemoteMatch by Roger
in thread Negative expressions with alternation in ProxyRemoteMatch by redhotpenguin

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