OpenAFS on (k)Ubuntu

OpenAFS on non-CSAIL Ubuntu Linux (and similar distributions)

These instructions should work as-is on Ubuntu 16.04 and later (including flavors such as Xubuntu, Kubuntu, and Mate). They may work on recent versions of (non-Ubuntu) Debian and other Debian- and Ubuntu-derived distributions as well, depending whether a repository is available with sufficiently recent versions of OpenAFS packages. Versions 1.8.7 and some patched versions of 1.8.6 and later are recent enough; due to a time-processing bug, earlier versions stopped working in January 2021.

These instructions are not needed and should not be used on CSAIL Ubuntu or other Debian/Ubuntu distributions that are already configured to support Kerberos and AFS, such as Athena workstations.