I needed to install logwatch a OS X machine for work, and i figured i would just document the process.
At this point just use all the defaults
Thats is… logwatch is installed as you can see by running
(cias staff at this point look to our internal wiki)
Now you just need to tweak your /etc/logwatch/conf/logwatch.conf file to suit your needs
Also if you want it to run everynight at midnight put a script in /etc/periodic/daily