Logwatch: only one report / week
if you want to have only one report in the week, you have to make the following changes in your setup:
The configuration has been successfully tested with CentOS 6.3 and logwatch 7.3.6.
check if the perl module perl-DateManip is installed -> yum install perl-DateManip.
modify your configuration file: /etc/logwatch/conf/logwatch.conf