Last modified: 06 Oct 2006
WARNING: This documentation covers Parallels H-Sphere versions up to 3.1. For the latest up-to-date Parallels H-Sphere documentation, please proceed to the
official Parallels site.
It is not recommended that you customize
cron jobs by yourself. Any alterations made to them are at your own risk!
Sometimes you may need to apply custom filters and wrappers to H-Sphere crontab,
for example, to prevent sending some system notifications. However, when you add or delete a system package,
crontab is being rewritten, and all modificatation are being lost.
For example, you have modified the cron-rotate.pl call in crontab like this:
0 2 * * * nice -15 /hsphere/shared/scripts/cron/cron_rotate.pl 2>&1 |
egrep -vf /hsphere/local/config/cron/hs_cron_rotate.filter
To prevent it from removing, save the copy of modified crontab as /hsphere/local/config/cron/crontab.custom:
# mkdir -p -m 0700 /hsphere/local/config/cron && crontab -l >>
Then, after each update H-Sphere will restore your custom crontab settings.