CL tip

[Rudge]

In "Command Line",
If you can only remember the first, or first few letters in a command, but can't remember the whole command, type in what you remember and hit the <Tab> key. It will show you all the commands that start with those few characters. You can even just hit <Tab> with nothing typed in, and get a list of all the commands that are available.    

[mokmeister]

Nice tip rudge12000. In the same vein, if you know what you want to do, but can't remember the command, at the command line, type "apropos [keyword]" (without quotes), where [keyword] is the string that relates to the command you are searching for.

For example:
[mokmeister@localhost ~]$ apropos whatis
apropos              (1)  - search the whatis database for strings
makewhatis           (  - Create the whatis database
whatis               (1)  - search the whatis database for complete words