[Bug 1256565] Re: apt-key del gives wrong message if key is not in keyring

[Lars Noodén]

This was more a case of worked other than expected.  Since it provided
feedback ("OK") I had expected that it would also say about the key's
presence.  So maybe the script is better silent.  I have been using it
manually and not in another script and usually have followed up with
"apt-key list" to verify that "del" ran as expected.  It's not a big
deal and happens only a few times per year.

An error message with a non-zero exit status would be more what I would
expect from the script if it can't find the key.  But it sounds like
doing that properly is not trivial.

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https://bugs.launchpad.net/bugs/1256565

Title:
  apt-key del gives wrong message if key is not in keyring

Status in “apt” package in Ubuntu:
  New

Bug description:
  If an attempt is made to remove a key that is already not on the list of trusted keys, apt-key gives no indication that the key 
  was not found.  Instead it says "OK" no matter what:

   # apt-key del 40976EAF437BBBBB
   OK
   # apt-key list | grep 40976EAF437BBBBB
   # apt-key list | grep 40
   pub   4096R/C0B21F32 2012-05-11
   pub   4096R/EFE21092 2012-05-11
   # apt-key del 40976EAF437BBBBB
   OK

  What should happen when an attempt is made to delete a key that is not
  found among the list of trusted keys is that apt-key should complain
  with some other message than "OK".  Maybe a "Key not found" message
  would be appropriate.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: apt 0.9.13~exp1ubuntu2
  ProcVersionSignature: Ubuntu 3.12.0-3.8-generic 3.12.0
  Uname: Linux 3.12.0-3-generic x86_64
  ApportVersion: 2.12.7-0ubuntu1
  Architecture: amd64
  CurrentDesktop: LXDE
  Date: Sat Nov 30 22:18:39 2013
  InstallationDate: Installed on 2013-11-19 (11 days ago)
  InstallationMedia: Lubuntu 14.04 "Trusty Tahr" - Alpha amd64+mac (20131118)
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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