> > Nick Willson wrote: > > > Can an apt-get upgrade (or similar) be backed-out? Say the upgrade appears > > to fail, is there a way to rollback to the previous state? I am running > > 2.1. > > APT stores the package files in /var/cache/apt/archives . > > The older version(s) should still be there. > > > Michel > > > PS: You might be interested in 'apt-get autoclean' >
Thank you. Let me see if this makes sense... The archives directory "/var/cache/apt/archives" contains the .deb files for packages installed since the last "apt-get clean", performed either explicitly or via dselect. A .deb in the archive is (typically) equivalent to the current version installed - it could be different (probably newer) if you do an "apt-get --download-only" or perform some kind of manual intervention. If I want to able to use the archive for a downgrade, I should copy it somewhere safe *before* beginning the upgrade. Is this correct? Has anyone used this, or any other mechanism, to rollback (completely or partially) after an "apt-get upgrade" or an "apt-get dist-upgrade"? Thanks -- Nick
