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dd if=/dev/random of=test.random bs=64 count=1
dd if=/dev/zero of=test.zero bs=64 count=1
echo "hello world!" > hello.txt

use IO::Uncompress::Gunzip qw(gunzip $GunzipError);
my $output;
my $status = gunzip $ARGV[0] => \$output, Strict => 1 or die "Failed!"
+;
print $GunzipError;
print $output;

test.pl test.random
test.pl test.zero
test.pl hello.txt