[Bug 1866844] Re: package libc6:amd64 2.31-0ubuntu3 failed to install/upgrade: installed libc6:amd64 package post-installation script subprocess returned error exit status 127

[brett hassall]

thanks.

this worked for me.

I have another linux partition installed so I  booted into the other
partition, manually installed the contents of the new libcrypt1 .deb (it
is only a lib and a link). The deb was already in the cache from the
failed update.

Rebooted back into focal. I could now login. sudo worked again too. 
To tidy up, ran:
sudo apt --fix-broken install
sudo apt-get update

All seems good for now.

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Title:
  package libc6:amd64 2.31-0ubuntu3 failed to install/upgrade: installed
  libc6:amd64 package post-installation script subprocess returned error
  exit status 127

Status in glibc package in Ubuntu:
  Confirmed

Bug description:
  
  cannot install this package

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: libc6:amd64 2.31-0ubuntu3
  ProcVersionSignature: Ubuntu 5.4.0-14.17-generic 5.4.18
  Uname: Linux 5.4.0-14-generic x86_64
  ApportVersion: 2.20.11-0ubuntu19
  Architecture: amd64
  Date: Tue Mar 10 09:39:56 2020
  DuplicateSignature:
   package:libc6:amd64:2.31-0ubuntu3
   Setting up libc6:amd64 (2.31-0ubuntu3) ...
   /usr/bin/perl: error while loading shared libraries: libcrypt.so.1: cannot open shared object file: No such file or directory
   dpkg: error processing package libc6:amd64 (--configure):
    installed libc6:amd64 package post-installation script subprocess returned error exit status 127
  ErrorMessage: installed libc6:amd64 package post-installation script subprocess returned error exit status 127
  InstallationDate: Installed on 2020-03-07 (2 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200304)
  Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu1
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu2
   apt  2.0.0
  SourcePackage: glibc
  Title: package libc6:amd64 2.31-0ubuntu3 failed to install/upgrade: installed libc6:amd64 package post-installation script subprocess returned error exit status 127
  UpgradeStatus: No upgrade log present (probably fresh install)

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