From: barto@kdbarto.org (David Barto)
Subject: [TUHS] hello, world
Date: Wed, 28 Dec 2011 12:56:27 -0800 [thread overview]
Message-ID: <3840176A-25FF-45C2-81DA-D3047871752D@kdbarto.org> (raw)
In-Reply-To: <mailman.1.1325037601.24307.tuhs@minnie.tuhs.org>
A long time ago at the University that I graduated from. . .
Shell scripts had just added the ability to have functions in them, so I wrote a script to do some processing of files that I had, and then logged off to let it run in the background.
The shell script was named 'A'.
In the script was a function, named 'A'
When the script ran, instead of calling 'A' the function, it called 'A' the script, and you can see where this goes from here.
2 days later I received an email from the admin (thankfully a friend) who enclosed the 'ps -axl' output from the machine. It showed thousands of copies of my script running and a load that indicated that the machine was useless for almost everything.
With the admonishment: "Don't ever do this again."
I haven't.
David
David Barto
barto at kdbarto.org
barto at ucsd.edu
next parent reply other threads:[~2011-12-28 20:56 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.1.1325037601.24307.tuhs@minnie.tuhs.org>
2011-12-28 20:56 ` David Barto [this message]
2011-12-25 13:10 Norman Wilson
2011-12-26 21:11 ` Warren Toomey
2011-12-26 21:15 ` Wilko Bulte
2011-12-26 21:20 ` Lyndon Nerenberg
2011-12-26 21:53 ` Armando Stettner
2011-12-26 22:13 ` Michael Davidson
2011-12-26 21:28 ` A. P. Garcia
2011-12-27 1:08 ` A. P. Garcia
2011-12-26 21:28 ` Michael Davidson
2011-12-28 0:13 ` Sven Mascheck
2011-12-28 0:20 ` Wilko Bulte
2011-12-28 7:34 ` Warren Toomey
2011-12-28 10:16 ` Ori Idan
2011-12-27 6:11 ` Adam
2012-01-04 3:37 ` Cyrille Lefevre
[not found] ` <Pine.BSI.4.64.1112271711290.603@dave.horsfall.org>
2011-12-27 18:01 ` Tim Newsham
2011-12-28 0:53 ` Corey Lindsly
2011-12-28 10:54 ` asbesto
2011-12-28 18:32 ` John Cowan
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