How do I get what users are doing?

[Dave]

How do I (from C) get the information on what a user is doing.  I have
seen the output from a w (who is online, and what they are doing), but
I can't figure out where it is coming from.

Thanks in advance.

David Frascone
-- 
David Frascone 
Georgia Institute of Technology, Atlanta Georgia, 30332
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