You are executing a command in Terminal that is not showing any output such as:
[09:32:52 root@myserver ~]cPs# /scripts/check_cpanel_rpms
[09:51:23 root@myserver ~]cPs#
This is expected behaviour The check_cpanel_rpms script is written in such a way that it shows output only if there is an error, otherwise it just exits without printing any output.
If a command gives a different or no output then something changed, in the above example the check_cpanel_rpms script does not give any output because all cPanel packages are correctly installed right now.