/usr/share/perl/5.18.2/pod/perlboot.pod is in perl-doc 5.18.2-2ubuntu1.7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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=head1 NAME
perlboot - This document has been deleted
=head1 DESCRIPTION
For information on OO programming with Perl, please see L<perlootut>
and L<perlobj>.
=cut
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