Perl comes with File::Spec since 1999 (perl 5.004_05) - http://perldoc.perl.org/File/Spec.html http://perldoc.perl.org/File/Spec.html NB. And there are more fu

Perl comes with File::Spec since 1999 (perl 5.004_05) - http://perldoc.perl.org/File/Spec.html http://perldoc.perl.org/File/Spec.html NB. And there are more full featured alternatives on CPAN like Path::Class (https://metacpan.org/pod/Path::Class https://metacpan.org/pod/Path::Class), IO::All (https://metacpan.org/release/IO-All https://metacpan.org/release/IO-All) and Path::Tiny (https://metacpan.org/pod/Path::Tiny https://metacpan.org/pod/Path::Tiny). Rebol has its own file datatype which works seamlessly across platforms - http://www.rebol.com/r3/docs/datatypes/file.html http://www.rebol.com/r3/docs/datatypes/file.html | http://www.rebol.com/docs/core23/rebolcore-12.html http://www.rebol.com/docs/core23/rebolcore-12.html