Article View: comp.bugs.sys5
Article #1025Re: ulimit (was: getty/login for callback)
From: Terry Hull
Date: Mon, 17 Apr 1989 22:40
Date: Mon, 17 Apr 1989 22:40
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In article <19516@genrad.UUCP> jpn@genrad.genrad.COM (John P. Nelson) writes: > >Excuse me, perhaps I'm slow. But could someone please explain to me >just what the PURPOSE of "ulimit" is? What are it's GOOD points? It is designed to keep processes from accidentally filling up file systems. Here is an example: I write a program that does a few calculations and writes the results to a disk file. The program is supposed to terminate after 100 iterations, but I forget to increment the counter on the way through the loop. The program ends up going through 1,000,000 iterations. I do not even notice because I am running the process in the background. With no ulimit, I can fill up a file system totally by accident. In general, a quota system does not keep users from filling up file systems either. We have a VAX 11/750 running VMS with quotas. We have approximately 3X more disk space allocated to users than we have on the machine!!!! -- Terry Hull Department of Electrical and Computer Engineering, Kansas State University Work: terry@eecea.eece.ksu.edu, rutgers!ksuvax1!eecea!terry Play: tah386!terry@eecea.eece.ksu.edu, rutgers!ksuvax1!eecea!tah386!terry
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arc1-ca.pugleaf.net!utzoo!dptcdc!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!unmvax!deimos.cis.ksu.edu!eecea!terryReferences:
<180001@mechp10.UUCP> <13853@rpp386.Dallas.TX.US> <797@twwells.uucp> <28@wells.UUCP> <399@aucis.UUCP> <501@bilver.UUCP> <19516@genrad.UUCP>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!dptcdc!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!unmvax!deimos.cis.ksu.edu!eecea!terry From: terry@eecea.eece.ksu.edu (Terry Hull) Newsgroups: comp.bugs.sys5 Subject: Re: ulimit (was: getty/login for callback) Message-ID: <628@eecea.eece.ksu.edu> Date: 17 Apr 89 22:40:44 GMT References: <180001@mechp10.UUCP> <13853@rpp386.Dallas.TX.US> <797@twwells.uucp> <28@wells.UUCP> <399@aucis.UUCP> <501@bilver.UUCP> <19516@genrad.UUCP> Reply-To: terry@eecea.eece.ksu.edu (Terry Hull) Distribution: usa Organization: Kansas State University, Manhattan Lines: 24