autocomplete?

There’s probably a name for this. And everyone else probably knows about it.:

So I’m sitting there inside /usr/local/src. There’s a subdirectory called sox-12.17.7. I want to move into that subdirectory. Apparently — and I only found this today for the first time — I can simply type cd sox and then press the TAB key, and the OS automagically inserts the rest for me.

It’s not the OS, but the (command) shell program: they don’t all do it, but the better ones (like bash, which I assume he’s using) do.

Now he’ll be wondering how many keystrokes he has typed unnecessarily 😉