Command for scrolling back through text on CLI

[Nigel Henry]

If I'm in text mode and run a command like, ls /usr/bin, I get a load of text 
scrolling by with no way to get back to the start of it. What command do I 
need to use so that I can scroll back through the text? Or are there any 
specific key combinations that will do this?

I looked at "man ls" and "man tail", but there didn't seem to be any help 
there.

Thanks.

Nigel.