Can we delete core files.

[senthil_kumar_1]

Hi All,


What is the purpose of core files.

Can we delete all the core files available in our HPUX 11.00.


Ex:

root@lgapps:/var > find / -name core
/home/ansys1/cliu/core
/home/ansys1/cryer/core
/home/ansys1/eirmis/core
/home/ansys1/emdutil/core
/home/ansys1/goetzke/core
/home/ansys1/lib/core
/home/ansys1/pmanicka/core
/home/ansys1/sbhagava/core
/home/ansys1/vkumar/engine/emd710/EMD_VT/core
/home/ansys1/xliu/core
/home/ansys1/ywang/core
/home/ansys1/zagone/core
/home/ansys1/zagone/tmp2zagonebk2/core
/home/gen/andersor/core
/home/gen/casseril/core
/home/gen/grave_yard/vz96qb/core
/home/gen/lister/core
/home/gen/bhoinack/core
/home/gen/noel/core
/home/gen/oddie/core
/home/ansys2/lost+found/core
/home/ansys2/alerch/core
/home/ansys2/bwang/core
/home/ansys2/csmidowi/backdrops/core
/home/ansys2/csmidowi/core
/home/ansys2/dgrzybow/core
/home/ansys2/emdutil/core
/home/ansys2/ho/core
/home/ansys2/irodrig/core
/home/ansys2/jblase/core
/home/ansys2/jcarr/ansys/zagone/core
/home/ansys2/jcarr/ansys/zagone/tmp2zagonebk2/core
/home/ansys2/jszatkow/core
/home/ansys2/lib/core
/home/ansys2/mklemp/core
/home/ansys2/nchristo/core
/home/ansys2/rmacvica/core
/home/ansys2/seanma/core
/home/ansys2/skeene/core
/home/ansys2/smoazezi/core
/home/ansys2/sswenson/core
/home/ansys2/zkaplan/core
/opt/apps/local/emdutil/lib/core
/opt/apps/local/emdutil/mx_new/core
/opt/csc/flexlm/core
/var/opt/dce/dced/core
/var/opt/cifsclient/core
/var/opt/omni/enhincrdb/_var_opt_omni/2C/core
/var/adm/syslog/core
/var/adm/core
/var/spool/cron/atjobs/core
/root/core
/emd/home/andersor/core
/emd/home/casseril/core
/emd/home/grave_yard/vz96qb/core
/emd/home/lister/core
/emd/home/bhoinack/core
/emd/home/noel/core
/emd/home/oddie/core
/emd/ansys1/cliu/core
/emd/ansys1/cryer/core
/emd/ansys1/eirmis/core
/emd/ansys1/emdutil/core
/emd/ansys1/goetzke/core
/emd/ansys1/lib/core
/emd/ansys1/pmanicka/core
/emd/ansys1/sbhagava/core
/emd/ansys1/vkumar/engine/emd710/EMD_VT/core
/emd/ansys1/xliu/core
/emd/ansys1/ywang/core
/emd/ansys1/zagone/core
/emd/ansys1/zagone/tmp2zagonebk2/core
/emd/ansys2/lost+found/core
/emd/ansys2/alerch/core
/emd/ansys2/bwang/core
/emd/ansys2/csmidowi/backdrops/core
/emd/ansys2/csmidowi/core
/emd/ansys2/dgrzybow/core
/emd/ansys2/emdutil/core
/emd/ansys2/ho/core
/emd/ansys2/irodrig/core
/emd/ansys2/jblase/core
/emd/ansys2/jcarr/ansys/zagone/core
/emd/ansys2/jcarr/ansys/zagone/tmp2zagonebk2/core
/emd/ansys2/jszatkow/core
/emd/ansys2/lib/core
/emd/ansys2/mklemp/core
/emd/ansys2/nchristo/core
/emd/ansys2/rmacvica/core
/emd/ansys2/seanma/core
/emd/ansys2/skeene/core
/emd/ansys2/smoazezi/core
/emd/ansys2/sswenson/core
/emd/ansys2/zkaplan/core
/emd/engine/gtpower/VKUMAR/1Cyl-710/core
/emd/engine/gtpower/cliu/gtp_tr/core
/emd/engine/starcd/aditya/core
/emd/tpw/adarlene/core
/emd/mxdata/mxadmin/core
/appl/gtpower.5.2/GTvtrain/v5.2.0/bin/core
/appl/iman.8.1.1.10/bin/core
/appl/iman.8.1.1.10/lib/oracle/core
/appl/iman.8.1.1.10/core
/appl/avl/FIRE/v73/obj_hp9000_11/mp_mpi/core
/appl/oracle/dba/product/9.2.0/inventory/filemap/oem_webstage/oracle/core
/appl/oracle/dba/product/9.2.0/oem_webstage/oracle/core
/appl/oracle/dba/product/9.2.0_oracle/inventory/filemap/oem_webstage/oracle/core
/appl/oracle/dba/product/9.2.0_oracle/oem_webstage/oracle/core
/appl/oracle/dba/admin/dba/core
/appl/EDS/DataAccess/5_0/Tomcat/webapps/tomcat-docs/catalina/docs/api/org/apache/catalina/core
/appl/hyperworks.7.0/altair/hw/tcl/hwat/core
/users/tpw01/adarlene/core
/data/tceloco/imandata/core
/data/tceloco81110/imandata/log_lgapps_tceloco/new_db_logs/make_datasettype_38/core
/data/tceloco81110/imandata/log_lgapps_tceloco/new_db_logs/make_datasettype_39/core
/data/tceloco81110/imandata/log_lgapps_tceloco/new_db_logs/make_datasettype_40/core
/data/tceloco81110/imandata/log_lgapps_tceloco/new_db_logs/make_datasettype_41/core
/data/tceloco81110/imandata/log_lgapps_tceloco/new_db_logs/make_datasettype_42/core
/data/tceloco81110/imandata/log_lgapps_tceloco/new_db_logs/make_datasettype_45/core
/data/tceloco81110/imandata/core


How to delete all core file.

[Stephan. · Accepted solution]

Hi,

#man core

The HP-UX system writes out a file containing a core image of a terminated process when certain signals are received (see signal(5) for the list of reasons).

iIf you don't want to debug them you can delete them by running 'find / -name core -fsonly vxfs -exec rm {} \;' (without the ').

You can also add this command to the crontab for an automatically deletion of the core files.

[Steven E. Protter]

Shalom,

Yes you can delete them.

Here is a cron based script.

The attached script will require some mods but can do the job.

SEP

[Michal Kapalka (mikap)]

hi,

at first you need to know what you are doing.

them you can follow the advice from SVO.

if you are using find command use also the option : -xdev /home for example.


mikap

[James R. Ferguson]

Hi:

Yes, 'core' files can be removed. You could simply create a crontask that runs once a day and do something like:

# find /path1 /path2 /path3 -xdev -type f -mtime +3 -name core -exec rm {} +

This looks for _files_ named (exactly) "core" and removes them if they are older than 3-days.

Replace '/path1' etc. with the directories in which you expect to find core files. This will be far less resource intensive than searching '/'.

If you are running 11.31 then you should look at your 'coreadm' parameters.

If you have appended a pid to the core file, you could do:

# find /path1 /path2 -xdev -type f -name core -o -name "core.[0-9][0-9]*" -exec ls -l {} +

...which finds both "core" and files named "core.12" but skips files like '/usr/share/man/man4.Z/core.4' (which you might want!).

@ SEP: The script you posted is _copyrighted_ !!!

Regards!

...JRF...

[Dennis Handly]

If you aren't going to pay someone to analyze them, you can remove them. Make sure you only remove files and not directories: -type f

[V. Nyga]

Hi,

Dennis has added it - make sure that these are files not directories.
The reason of a core directory is to prevent applications to create a core file.

Also: with 'file core' you can identify the application which created the core file.
Then you can ask the users what's the problem with these applications.

HTH
Volkmar

[Ganesan R]

Hi Senthilkumar,

Core files are normally created by applications when it panics or not able to handle the requests. You can do basic level debug using these commands.

#file
#what
#gdp

As mentioned by others, nothing harm to delete the core files if you don't want them.

[James R. Ferguson]

Hi Senthil:

If you are satisfied with the answers you have received it would be appreciated if you would assign points:

http://forums11.itrc.hp.com/service/forums/helptips.do?#28

...JRF...

[點燃]

Bro,
if you don't need it for aome analysis, just go ahead!!

regards!
have a good one!!