http://www.perlmonks.org?node_id=967782


in reply to Re^4: File::Path and mode with sgid
in thread File::Path and mode with sgid

Just to add a bit of info for this matter. It seems that POSIX defines this behaviour:
http://lists.gnu.org/archive/html/bugcoreutils/2011-05/msg00071.html

In Section Seekers of Perl Wisdom