Linux.com: CLI Magic: The Five Ws
Jul 25, 2006, 05:15 (0 Talkback[s])
(Other stories by Nathan Willis)
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"The command line can tell you a lot, if you bother to ask it.
Most of us learned the five Ws as a research rubric: who? what?
where? when? why? (and usually, how?). By sheer coincidence, the
five Ws can also illuminate important characteristics on your Linux
system, its users, processes, and commands.
"There are four commands that ask some form of the question
'who.' The whois command queries the whois directory service (RFC
3912), so you can look up public info for a registered domain name.
Nowadays, unfortunately, much of that information is inaccurate or
simply reflects registrar information..."