[K12OSN] IDE if /home is NFS?

[Norman Gaywood]

On Thu, Apr 01, 2004 at 05:56:55PM +0000, dahopkins at comcast.net wrote:
> > >I knocked over 4Gb off the backup just with cache and core.* file exclusion. (I 
> > have a cron job now that deletes all core.some_number each night as well)
> > >
> > Can I ask what the core.* files are and where they come from?
> 
> The core.* files have names like core.4123342 (I think the number is the process id of the program that crashed) and are the results of application programs crashing (or some such). I have not been able to determine exactly how the teachers are causing them.  I suspect that they are exiting rdesktop by just clicking on the X and not exiting the Windows TS correctly (because I can see Disconnected sessions in the TS manager).  Also, the teachers (and students) tend to exit almost every other application the same way: Just click on the X, or click on the upper left of a window and choose Close for the window operation, as opposed to choosing the applications File --> Exit.  This is a bad habit that I haven't been able to convince them to break since it works on Windows systems without obvious side-effects.  Each core file tends to be about 50-60MB and I have seen a teacher create more than 10 of them in a single day.  Eventually I will track it down, but for now I live with !
it!
>  since I am only at the school on Fridays, have other more pressing issues to resolve and have a work-around for now.

On a command line, try doing a:

file core.*

That will tell you what application is generating the core files.

-- 
Norman Gaywood, Systems Administrator
School of Mathematics, Statistics and Computer Science
University of New England, Armidale, NSW 2351, Australia

norm at turing.une.edu.au            Phone: +61 (0)2 6773 2412
http://turing.une.edu.au/~norm    Fax:   +61 (0)2 6773 3312

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