[ale] guide to ! and $

[Gary Maltzen]

You've explored the obvious ('man bash'), right?

Cade asked:
> Does anybody know of a good web site to explain the functions of ! and $
> on the command line.  I know a few tricks like !! and $_ but i don't know
> what I don't know.  Any sugestions?  Trying to search on google does not
> help(hard to search for non letters). 


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