Mike Jeays wrote:
Please do not try to execute this: :() { :&:; } ;: on your BSD machine.
What does it do?
It is easier to understand when you replace the ":" by a more conventional
subroutine name.
myproc () {
myproc &
myproc
}
myproc
It recursively generates useless processes that clog up the machine. Mine
ground to a halt and froze after a few seconds.
Interesting, if not annoying ;) Thanks for the explanation, Mike. I edited
/etc/login.conf and changed maxproc=unlimited to maxproc=200. Then tried it. Took a
second or so to start spewing "Cannot fork: Resource temporarily unavailable".
I'd opened a 2nd session, and ps wasn't even able to give me full info on what was
happening. Luckily, is was easily interruptible and the system seemed to recover.
-Rob
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