When I said "from the command line", I sshed into my account, and read the perldoc there. I was not talking about from my system's command line.
And darn it! My local List::Util has uniq.
And this is just great, for my stuff for the browser, I am stuck with 5.8.8; but on the command line of my web host, I have 5.24.2. That's so not fair! (And not a PM problem.)
And yes, my web host has List::MoreUtils installed, and I used it instead. Thanks!