[NTLUG:Discuss] Silly noobie question - history

[Richard Geoffrion]

Stephen Klein wrote:
> Michael Barnes wrote:
>   
>> At a command line, I use the up arrow and scroll through the history 
>> list looking for a command.  
> The [Page Down] key will take you back to a the empty command line, and 
> the beginning of the history.  [Page up] will take you to the first 
> command in the history.
>
>   
OK... so what is with the ! ??  Where is the documentation that says 
that typing

!cat

Will run the last 'cat' command that was previously run??

What else can you do with ! ??

-- 
Richard