On Wed, 2019-03-13 at 15:13 -0700, Alice Wonder wrote: > When logs (e.g. /var/log/maillog) are rotated (e.g. to > /var/log/maillog-YYYYMDD) is there a way via systemd or whatever It's logrotate that does it. You may want to look at the 'prerotate' and 'postrotate' sections of the logrotate config files - I'm sure you should be able concoct something that will do what you want. P.