[Bug 1802462] Re: When s390-tools-zkey package is not installed 'zkey -h' lists wrong package name in apt hint

[Adam Conrad]

Hello bugproxy, or anyone else affected,

Accepted command-not-found into cosmic-proposed. The package will build
now and be available at https://launchpad.net/ubuntu/+source/command-
not-found/18.10.0~pre2 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-cosmic to verification-done-cosmic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-cosmic. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: command-not-found (Ubuntu Cosmic)
       Status: New => Fix Committed

** Tags added: verification-needed verification-needed-cosmic

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https://bugs.launchpad.net/bugs/1802462

Title:
  When s390-tools-zkey package is not installed 'zkey -h' lists wrong
  package name in apt hint

Status in Ubuntu on IBM z Systems:
  Triaged
Status in command-not-found package in Ubuntu:
  In Progress
Status in command-not-found source package in Cosmic:
  Fix Committed

Bug description:
  [SRU Justification]
  The contents of command-not-found-data in cosmic are out of date with respect to the archive, resulting in misleading suggestions offered to users for some commands.

  [Test case]
  1. Install command-not-found
  2. . /etc/bash.bashrc
  3. Install btrfs-progs.
  4. Ensure that the package cloud-init is not installed.
  5. Type 'btrfs-debug-tree'.  Observe that bash suggests installing btrfs-progs, even though btrfs-progs is installed (and does not provide a btrfs-debug-tree command).
  6. Type 'cloud-id'.  Observe that bash returns the general 'command not found' error.
  7. Install command-not-found from -proposed.
  8. Type 'btrfs-debug-tree' again.  Observe that bash correctly reports 'command not found'.
  9. Type 'cloud-id' again. Observe that bash suggests to install the cloud-init package.

  [Regression potential]
  In the event that there is bad data in the database update, command-not-found may return wrong suggestions after this SRU.  It is already doing so currently, and there are no known instances of bad data in the database updates, so this possibility is not a reason to block the SRU.

  OS: Ubuntu 18.10 providing s390-tools_2.6.0-0ubuntu7_s390x.deb
  When the 's390-tools-zkey' package is NOT installed, the installation hint given by zkey -h is not as expected

  Environment:
  IBM Z 13 or Z 14 LPAR or z/VM

  Details
  =======
  On an IBM Z13 or Z14 based Ubuntu 18.10 system where the 'zkey' tool is not yet installed,
  the installation hint given by zkey is misleading.
  The hint should read: 'apt install s390-tools-zkey'

  The apt-cache search for zkey displays the expected package name,
  though.

  Ran the above install command which succeeded as expected, the zkey
  tool was available.

  ---uname output---
  Linux system 4.18.0-10-generic #11-Ubuntu SMP Thu Oct 11 15:06:06 UTC 2018 s390x s390x s390x GNU/Linux

  Machine Type = IBM Type: 3906 LIC Identifier:   505724ff5b747876

  ---Debugger---
  A debugger is not configured

  ---Steps to Reproduce---
   1.) Install Ubuntu 18.10 onto an LPAR or z/VM system
  2.) Ensure the zkey tool is not installed
  3.) run: zkey -h
  # zkey -h

  Command 'zkey' not found, but can be installed with:

  apt install s390-tools

  Userspace tool common name: apt

  The userspace tool has the following bit modes: 64bit

  Userspace rpm: s390-tools_2.6.0-0ubuntu7_s390x.deb

  Userspace tool obtained from project website:  na

  *Additional Instructions for Christian.Rund at de.ibm.com:
  -Attach ltrace and strace of userspace application.

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