Good Unix pranks for kids?

Paul Johnson paul at
Tue Sep 28 21:11:46 BST 2010

On Tue, Sep 28, 2010 at 08:12:38PM +0200, Stefan Scheytt wrote:

> Do you guys know any other fun pranks to play on an unwitting X user from
> a privileged command line?

The old favourites used to be xflip and meltdown, but they might run too
quickly to be appreciated nowadays.  Then there's xroach and xsnow for the

I think that the first perl program I ever wrote, back in the late 80s, read
the rgb.txt file and ran xsetroot to change the background to random colours.
Because that was the sort of thing you did when your university got hardware
that gave you more than 80x24 characters.  Oh, what high jinks!

Paul Johnson - paul at

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