Debian-Ubuntu: Debian and Debian-Based Distro Administration

Administer Debian, Ubuntu, Linux Mint, Pop!_OS, Devuan, and other Debian-derived systems, with partial coverage for Kali when the question is about base OS administration rather than security-distro workflow.

Focus on Debian stable and Ubuntu LTS first, then layer in derivative-specific behavior, PPA workflows, snap confinement, Ubuntu HWE, and explicit checks for derivatives that diverge on init, packaging defaults, or intended use.

Target versions: see references/versions.md (verified per the receipt date in that file). Do not restate version numbers here.

When to use