/usr/share/doc/libio-compress-perl/examples/compress-zlib/filtdef is in libio-compress-perl 2.052-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | #!/usr/bin/perl
use strict ;
use warnings ;
use Compress::Zlib ;
binmode STDIN;
binmode STDOUT;
my $x = deflateInit()
or die "Cannot create a deflation stream\n" ;
my ($output, $status) ;
while (<>)
{
($output, $status) = $x->deflate($_) ;
$status == Z_OK
or die "deflation failed\n" ;
print $output ;
}
($output, $status) = $x->flush() ;
$status == Z_OK
or die "deflation failed\n" ;
print $output ;
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