It wasn't that long ago that a fresh Unix install of any flavor didn't come with Perl, Python, zsh, or other common shell or scripting languages. And there's al

It wasn't that long ago that a fresh Unix install of any flavor didn't come with Perl, Python, zsh, or other common shell or scripting languages. And there's already a trend away from installing those by default. Since adding them now takes mere seconds, the barrier is low.