Alternate title: An history of OS-Level Virtualisation on UNIX and then Linux. This post is part of an entry for the Handmade Network’s Learning Jam 2024 The problem It all starts with chroot (UNIX, 1982) $ apropos chroot chroot (1) - run command or interactive shell with special root directory chroot (2) - change root directory Chroot is a kernel mechanism available since early versions of UNIX that allows to run a process as with an alternate root directory. The process sha...