I recognize that Up/Down will give you the command history. But, how do you look at past output by scrolling up and down?
I have used Shift+Page Up/Page Down, Alt+Shift+Up/Down and Page Up/Page Down but none of these seem to work.
It is a Redhat Linux box.
SHIFT+Page Up and SHIFT+Page Down. If it doesn't work try this and then it should:
Go the terminal program, and make sure
Edit/Profile Preferences/Scrolling/Scrollback/Unlimited
is checked.
The exact location of this option might be somewhere different though, I see that you are using Redhat.