The Ubuntu software center is able to display a detailed history of packages installed /updated/removed according to date.
- Where does it get this info from? (
/var/log/dpkg.logis maintained only for 12 months; I don't know of any apt-* or dpkg commands to get the date when a package was first installed.)
- How can I copy this data in the form of a table / text to be processed by another program?