Navigation in Terminal

Simple one here guys, I remember there was a key that you could press in terminal to开发者_高级运维 fill out the folder name for you when changing directory, saving you have to type out a huge folder name and escaping in the spaces.

cd mydir/ccp... ..... .......

I can't find it on google, does anyone know the key/key command I'm taking about?

Are you talking about completion? In bash (any many other shells) Tab is the key for completion.

Its the TAB key (assuming you are using bash shell in Terminal on Mac OS X).