topic Re: redirect core file in Operating System - HP-UX

redirect core file

QUIRICONI — Fri, 12 Sep 2003 12:33:02 GMT

Hi all,

I would like to know how I can redirect a core file ??
In fact a huge core is generated under a folder that is too small... I want to generate it under an another folder...

I've tried to do a ln -s /other_folder core
but the core is not generated in this case..

Have you got some ideas ??

Regards,
Jean-Remi.

Re: redirect core file

Robert-Jan Goossens — Fri, 12 Sep 2003 12:36:30 GMT

Hi Jean-Remi,

How about linking it to /dev/null.

# ln -s /dev/null core

Hope it helps,

Robert-Jan.

Re: redirect core file

RAC_1 — Fri, 12 Sep 2003 12:38:12 GMT

ln -s will do the trick.

ln -s /dev/null core.

ln -s /other_file core.

Re: redirect core file

Kent Ostby — Fri, 12 Sep 2003 12:39:51 GMT

If you just want to avoid having it created,
then you can create a subdirectory in the directory where the core files show up and call it "core" then there will be no core created at all.

Best regards,

Kent M. Ostby

Re: redirect core file

H.Merijn Brand (procura — Fri, 12 Sep 2003 12:40:16 GMT

If you do not need the full core dump, you can use 'limit' to - well - limit the core size. Sometimes the start will do

# limit
cputime 0:0-1
filesize 4194303 kbytes
datasize 262144 kbytes
stacksize 8192 kbytes
coredumpsize 2097151 kbytes
memoryuse 4194303 kbytes
descriptors 60
#

Enjoy, have FUN! H.Merijn

Re: redirect core file

doug mielke — Fri, 12 Sep 2003 12:44:47 GMT

I think cores by default are generated in the current directory. If you call the offending program from a larger directory, would the core be placed there?

Re: redirect core file

Jeff Schussele — Fri, 12 Sep 2003 12:47:32 GMT

Hi Jean-Remi,

Core files are created in the process present working directory, so you have two options:

1) Move to a larger dir before starting the process:
cd /other/larger/dir
/path/to_your/process

2) Explicitly set the $PWD var before starting
export PWD=/other/larger/dir
/path/to_your/process

HTH,
Jeff

Re: redirect core file

QUIRICONI — Fri, 12 Sep 2003 12:56:04 GMT

Well,

I've tried the command:

[HP-UX]:/tmp>ln -s /folder core

[HP-UX]:/tmp> ll
core -> ./folder
core_cprog.c
core_prog

But the core is not generated at all.
I need this entire core to analyse it and I need to redirect it in an another folder...

Re: redirect core file

RAC_1 — Fri, 12 Sep 2003 13:05:11 GMT

What are permissions on /folder file. The user who runs this program should be able to access /folder file.

Re: redirect core file

Mark Grant — Fri, 12 Sep 2003 13:11:07 GMT

Kents reply above shows us that a core file will not be created if you have linked "core" to a folder. Unless you have a typo in your post, this is exactly what you have done :) Therefore, no core.

You should have tried "ln -s /foder/core core"

Re: redirect core file

QUIRICONI — Fri, 12 Sep 2003 13:51:26 GMT

ok,

ln -s /folder/core core

it works properly.

Thank you all,
Jean-R??mi.