A complete practical pathway through files, Bash, permissions, processes, Ubuntu 24.04 packages, systemd, networking, SSH and restoration. Prepare an Ubuntu 24.04 lab VM, a Bash session and basic terminal familiarity. Administrative exercises belong only in that VM, never on a production server. File exercises use disposable directories. Written and code answers are assessed with explicit rubrics.
Understand the system and work safely · Compose reliable commands and scripts · Identities, permissions and processes · Install, supervise and diagnose a service · Networking, HTTP, DNS and remote access · Storage, backup and complete incident handling