#!/usr/bin/perl
use strict ;
use warnings ;
use Compress::Zlib ;
binmode STDOUT; # gzopen only sets it on the fd
#my $gz = gzopen(\*STDOUT, "wb")
my $gz = gzopen('-', "wb")
or die "Cannot open stdout: $gzerrno\n" ;
while (<>) {
$gz->gzwrite($_)
or die "error writing: $gzerrno\n" ;
}
$gz->gzclose ;