Friends ,

I have the following questions about crontab file :

1) In crontab file I got the folllowing output :

[root@lpt ~]# cat /etc/crontab
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/
# run-parts
01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily
22 4 * * 0 root run-parts /etc/cron.weekly
42 4 1 * * root run-parts /etc/cron.monthly

00 10 * * * root run-parts /etc/cron.daily

 */5  * * * * /tmp/test.sh

1. It is not system specific: If you do everything right, then it should work.

2. man run-parts : man run-parts(8) - run scripts or programs in a directory by debian Translated by humans

3. That is 5 minutes, man 5 crontab

 
field          allowed values
-----          --------------
minute         0-59
hour           0-23
day of month   1-31
month          1-12 (or names, see below)
day of week    0-7 (0 or 7 is Sun, or use names)

copy the script to the directory, don't edit the cron.daily configs.

Also, the script may be failing if the environment variables that you are defining are not set in the script. If you run it manually and it works, but does not in cron, that is usually the case.

Also, if you want the script to run at a different interval than the cron.X then just set up a specific cron job for it with crontab -e.

the cron.X files are for anacron to manage your jobs.