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I have installed the server image of 20.04 LTS (Focal Fossa).

My 64-bit database product from IBM requires a 32-bit library for compatibility reasons , but this 32-bit library is not found when I apt-get install libpam0g:i386.

(This 32-bit compatibility library was available on 18.04 LTS and 16.04 LTS).

The package name is 'libpam0g:i386'. This is what I see:

# apt-get update
Hit:1 http://gb.archive.ubuntu.com/ubuntu focal InRelease
Get:2 http://gb.archive.ubuntu.com/ubuntu focal-updates InRelease [89.1 kB]
Hit:3 http://gb.archive.ubuntu.com/ubuntu focal-backports InRelease
Get:4 http://gb.archive.ubuntu.com/ubuntu focal-security InRelease [97.9 kB]
Get:5 http://gb.archive.ubuntu.com/ubuntu focal-updates/main amd64 c-n-f Metadata [368 B]
Get:6 http://gb.archive.ubuntu.com/ubuntu focal-security/main amd64 c-n-f Metadata [344 B]
Fetched 188 kB in 1s (248 kB/s)         
Reading package lists... Done

# apt-get install libpam0g:i386
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libpam0g:i386

Any suggestions?

UPDATES

grep -r ^deb /etc/apt/ --include="*.list" 
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu focal main restricted
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu focal-updates main restricted
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu focal universe
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu focal-updates universe
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu focal multiverse
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu focal-updates multiverse
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu focal-security main restricted
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu focal-security universe
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu focal-security multiverse
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  • 1
    Please add output of grep -r ^deb /etc/apt/ --include="*.list" to the question.
    – N0rbert
    Apr 27, 2020 at 18:24

2 Answers 2

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It seems that for ubuntu 20.04 the libpam0g:i386 is renamed to libpam_systemd:i386

The following command worked for me, and delivered the 32-bit library that I needed:

dpkg --add-architecture i386

sudo apt install libpam-systemd:i386

==============

At first I tried manual installation of libpam0g:i386 , and it also worked but with more steps for manual dependency handling. Not recommended.

copy libpam0g_1.3.1-5ubuntu4_i386.deb from https://packages.ubuntu.com/focal/i386/libpam0g-dev/download to the target server.

The target server has no X server (is headless), so in an ssh session:

apt update

dpkg --add-architecture i386

apt install libaudit1:i386

apt install libc6:i386

dpkg --install libpam0g_1.3.1-5ubuntu4_i386.deb

This installed the dependencies first, then the required libpam0g:i386, and the IBM software accepted this. Much easier to use apt install libpam-systemd:i386 because that delivered the dependencies automatically.

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Really it is available. You need to run sudo apt-get update first.

And then run sudo apt-get install libpam0g:i386

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  • See updated question, this gives the same result "Unable to locate package libpam0g:i386" . What am I missing?
    – mao
    Apr 27, 2020 at 17:43
  • I would recommend to change the mirror to archive.ubuntu.com . The package is in main, so it is difficult to not have it.
    – N0rbert
    Apr 27, 2020 at 18:22

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