foo@bar:/media$ update-manager -d
Checking for a new Ubuntu release
authenticate 'saucy.tar.gz' against 'saucy.tar.gz.gpg'
extracting 'saucy.tar.gz'
Real-time signal 0
Note that I did this in a read-only directory. When running, e.g., in /tmp, it works reproducibly.
foo@bar:/media$ update-manager -d
Checking for a new Ubuntu release
authenticate 'saucy.tar.gz' against 'saucy.tar.gz.gpg'
extracting 'saucy.tar.gz'
Real-time signal 0
Note that I did this in a read-only directory. When running, e.g., in /tmp, it works reproducibly.