I recently created a launchd that updates and upgrades my macports every sunday night while I'll sleep. I'm currently trying to find out if there is a way to know when macports was last updated? I'd like to know if my launchd is truly working or not.
The first thing Macports has to do when updating is synchronising the ports.
These are in /opt/local/var/macports/sources/rsync.macports.org/release/tarballs/ports.
The modification date of this directory can tell you when the ports were last synchronised.