[Bug 1757220] [NEW] Removing the package keeps the motd alive

[Andreas Hasenack]

Public bug reported:

If the ubuntu-advantage-tools package is removed (not purged), and the
motd message has been generated at least once before, it will stick in
the motd forever. The reason is that the cached motd file output remains
on disk in /var/cache/update-advantage-tools.

This does not happen if the package is purged instead of removed.

The cronjob also remains behind. It exits early if the ubuntu-advantage
script is not installed, however.

Ideally upon removing the package these should be removed as well, and not just when the package is purged:
- /var/cache/update-advantage-tools/ubuntu-advantage-status.cache
- /etc/cron.daily/ubuntu-advantage-tools
- /etc/update-motd.d/80-{livepatch,esm}

To fix this bug, at a minimum the cache file should be deleted upon
removal of the package.

** Affects: ubuntu-advantage-tools (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  If the ubuntu-advantage-tools package is removed (not purged), and the
  motd message has been generated at least once before, it will stick in
  the motd forever. The reason is that the cached motd file output remains
  on disk in /var/cache/update-advantage-tools.
  
  This does not happen if the package is purged instead of removed.
  
  The cronjob also remains behind. It exits early if the ubuntu-advantage
  script is not installed, however.
  
  Ideally upon removing the package these should be removed as well, and not just when the package is purged:
  - /var/cache/update-advantage-tools/ubuntu-advantage-status.cache
  - /etc/cron.daily/ubuntu-advantage-tools
  - /etc/update-motd.d/80-{livepatch,esm}
+ 
+ To fix this bug, at a minimum the cache file should be deleted upon
+ removal of the package.

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https://bugs.launchpad.net/bugs/1757220

Title:
  Removing the package keeps the motd alive

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