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File: //usr/share/doc/perl-IO-Compress/compress-zlib/gzcat

#!/usr/bin/perl

use strict ;
use warnings ;

use Compress::Zlib ;

#die "Usage: gzcat file...\n"
#    unless @ARGV ;

my $filename ;

@ARGV = '-' unless @ARGV ;

foreach my $filename (@ARGV) {
    my $buffer ;

    my $gz = gzopen($filename, "rb") 
         or die "Cannot open $filename: $gzerrno\n" ;

    print $buffer while $gz->gzread($buffer) > 0 ;

    die "Error reading from $filename: $gzerrno" . ($gzerrno+0) . "\n" 
        if $gzerrno != Z_STREAM_END ;
    
    $gz->gzclose() ;
}