/usr/lib/perl/5.18.2/File/Spec.pm is in perl-base 5.18.2-2ubuntu1.
This file is owned by root:root, with mode 0o644.
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 | package File::Spec;
use strict;
use vars qw(@ISA $VERSION);
$VERSION = '3.40';
$VERSION =~ tr/_//;
my %module = (MacOS => 'Mac',
MSWin32 => 'Win32',
os2 => 'OS2',
VMS => 'VMS',
epoc => 'Epoc',
NetWare => 'Win32', # Yes, File::Spec::Win32 works on NetWare.
symbian => 'Win32', # Yes, File::Spec::Win32 works on symbian.
dos => 'OS2', # Yes, File::Spec::OS2 works on DJGPP.
cygwin => 'Cygwin');
my $module = $module{$^O} || 'Unix';
require "File/Spec/$module.pm";
@ISA = ("File::Spec::$module");
1;
__END__
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