Linux – When does `cron.daily` run

From google search on path in crontab

root@pingu # 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

You basically want to set the PATH and then not have to worry about the variations. Also, the quick test is to run your script via SSH on all your boxes using the same environment variables.

Could be that the directory where ethtool is located is not on the user's path.

To check the path:

echo $PATH

To locate ethtool

find / -name ethtool

You may need to run the above as root, in case the user doesn't have permission to access the directory ethtool is in. Once you have found ethtool, and made sure its directory is in the users path, you can then check the permissions on the folder and ethtool itself.

ls -l /path_to_ethtool_directory
ls -l /path_to_ethtool_directory/ethtool

Hope that helps!