https://gist.github.com/cosmomill/4693222
Purge cronolog logfiles. ErrorLog "|/usr/bin/cronolog -r /usr/bin/cronopurge -G...
Purge cronolog logfiles. ErrorLog "|/usr/bin/cronolog -r /usr/bin/cronopurge -G '1week:/var/log/apache2/error.log.%s' -p 12hour -l /var/log/apache2/error.log...
purgelogfilesusrbin