Hi Monks!

I'm seeing some unusual IO::Uncompress::Gunzip behavior, that doesn't seem to track with how the gzip command works. Please help me understand this difference. Basically, if I have a number of gzipped files in a directory, and run the command 

cat files* | gunzip -c

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I get the contents of all the files to stdout. However, if I do a similar thing from inside a perl script, using IO::Uncompress::Gunzip, I only get the contents of the first file. Here is my test script (for unix): 
use strict;
use warnings;

use IO::Compress::Gzip qw(gzip $GzipError) ;
use IO::Uncompress::Gunzip qw(gunzip $GunzipError) ;

my $file;
for my $txt ( qw(File1| File2| File3|) ) {
    $file = "/tmp/tst${txt}.gz";
    print STDERR "$file\n";
    gzip \$txt => $file or die "gzip failed: $GunzipError\n";
}

my $contents = `cat /tmp/tst*`;
print STDERR "contents=$contents\n";

my $out;
gunzip \$contents => \$out or die "gunzip failed: $GunzipError\n";
print STDERR "Here comes the decrypted stuff:\n$out\n";

print STDERR "Now we use the gunzip command to do the same:\n";

print STDERR `cat /tmp/tst* | gunzip -c`;

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Any pointers are greatly appreciated!

Thanks

-Craig

In reply to Unusual IO::Uncompress::Gunzip behavior by cmv

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