*** This bug is a duplicate of bug 1874953 *** https://bugs.launchpad.net/bugs/1874953
Public bug reported: I have modified versions of the conf file. I wanted to diff it when prompted by do-release-upgrade. That failed with "sh: 1: pager: not found". Snippet: ======================= Setting up smartmontools (7.1-1build1) ... Configuration file '/etc/default/smartmontools' ==> Modified (by you or by a script) since installation. ==> Package distributor has shipped an updated version. What would you like to do about it ? Your options are: Y or I : install the package maintainer's version N or O : keep your currently-installed version D : show the differences between the versions Z : start a shell to examine the situation The default action is to keep your current version. *** smartmontools (Y/I/N/O/D/Z) [default=N] ? d sh: 1: pager: not found diff: standard output: Broken pipe dpkg: error processing package smartmontools (--configure): conffile difference visualizer subprocess returned error exit status 127 ProblemType: Package DistroRelease: Ubuntu 20.04 Package: smartmontools 7.1-1build1 ProcVersionSignature: Ubuntu 4.15.0-109.110-generic 4.15.18 Uname: Linux 4.15.0-109-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.3 Architecture: amd64 CasperMD5CheckResult: skip Date: Fri Jul 3 13:32:52 2020 ErrorMessage: conffile difference visualizer subprocess returned error exit status 127 Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2 PythonDetails: /usr/bin/python2.7, Python 2.7.18rc1, python-is-python2, 2.7.17-4 RelatedPackageVersions: dpkg 1.19.7ubuntu3 apt 2.0.2ubuntu0.1 SourcePackage: smartmontools Title: package smartmontools 7.1-1build1 failed to install/upgrade: conffile difference visualizer subprocess returned error exit status 127 UpgradeStatus: Upgraded to focal on 2020-07-03 (0 days ago) modified.conffile..etc.default.smartmontools: [modified] modified.conffile..etc.smartd.conf: [modified] mtime.conffile..etc.default.smartmontools: 2016-01-25T23:02:07 mtime.conffile..etc.smartd.conf: 2014-10-14T07:00:31 ** Affects: smartmontools (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-package focal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886218 Title: do-release-upgrade error when trying to diff modified conf files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/smartmontools/+bug/1886218/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs