syntax for outputing past bash commands to a .txt file

I know I've seen it before on the internet somewhere
or perhaps it was this discussion group. I can't
recall...

My question is this:

What's the exact syntax to print to a text file, a
history of commands you've typed on the command shell?

Or is there a file in my OS (Mandrake 8.1) where I can
view like say....my last 20 or so commands?

Thanks in advance,
Alpha Z Sanchez


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