Section 04
Tips & How-To
The terminal, systemd, snapshots and fixing what breaks — practical how-tos, no gatekeeping.
- 01Your First Hour With the TerminalTen commands, one mental model, and the confidence to stop fearing the shell — everything a newcomer needs to start.
- 02systemd Services, DemystifiedWhat a unit file actually is, how to write one, and how to make your own script start on boot and restart when it dies.
- 03btrfs Snapshots Saved My WeekendRoll back a broken update in one reboot — how btrfs snapshots work and how to set them up before you need them.
- 04Fix a Broken Boot Without PanickingGRUB rescue, chroot from a live USB, and the calm, ordered steps to get an unbootable machine back.