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AlmaLinux 9’s root Btrfs lets you snapshot the entire system before updates. Learn how to create, automate, and roll back snapshots, plus the trade‑offs and best‑practice cleanup strategy.
Fedora Workstation uses Btrfs by default, offering cheap snapshots and GRUB-based rollbacks—but the root-versus-home subvolume split means you need to snapshot intentionally.
When you need a single package from testing or unstable without upgrading the whole system, APT pinning via /etc/apt/preferences offers precise control—but a single wildcard can break your updates.
Learn how to safely apply a new NixOS configuration, upgrade the system, and verify the changes with nixos-rebuild. The guide covers prerequisites, step‑by‑step commands, checks, and rollback options.
fedora
debian
nixos