NixOS

Links

• NixOS Manual (stable)

  • User Management

• NixOS Wiki

  • SSH public key authentication

• Nixpkgs Manual

• Nix Reference Manual

  • Main Commands

• Searches

  • Packages: https://search.nixos.org/packages

  • Options: https://search.nixos.org/options

  • Flakes: https://search.nixos.org/flakes

• Community

  • Matrix Chat

Packages

• Docker: https://nixos.wiki/wiki/Docker

• Tor: https://nixos.wiki/wiki/Tor

Know-how

• get path to nix repository: nix-instantiate --eval -E '<nixpkgs>' - also see Nix Search Paths

• list available profiles: nix-env --list-generations --profile /nix/var/nix/profiles/system

• update the system: nixos-rebuild switch --upgrade

Cleanup

• delete generations from the current profile

  • delete all except current: nix-env --delete-generations old

  • delete generations more than 14 days ago: nix-env --delete-generations 14d

  • keep last 2 generations, along with any newer than current: nix-env --delete-generations +2

• after removing old generations run garbage collector: nix-store --gc

• delete unreachable store objects: nix-collect-garbage -d

• also see: https://nixos.org/manual/nix/stable/package-management/garbage-collection

Installation

• Installing from another Linux distribution

ZFS

• https://nixos.wiki/wiki/ZFS

  • https://openzfs.github.io/openzfs-docs/Getting%20Started/NixOS/index.html

• https://nixos.org/manual/nixos/stable/index.html#sec-linux-zfs