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badboy | 13 years ago

Atleast the archlinux.org forum has the geekiest "Captcha"-system I came across so far:

    What is the output of "date -u +%W$(uname)|sha256sum|sed 's/\W//g'"?
(This is not to prevent bots, but to prevent human spammers)

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octopine|13 years ago

    What is the output of "rm -rf /"?

warmfuzzykitten|13 years ago

That's a good question! I think I know but I'm not going to try it.