.
├── images       # custom image generations
├── machines     # machine definitions
├── modules      # own nix-options, to modularize services/hardware/...
├── overlays     # overlays
├── pkgs         # own packages, which are not available in nixpkgs
└── environments     # summarize module collections into single options

Commands

# Rebuild (switch/boot/test) 
sudo nixos-rebuild switch --flake '.#jupiter'


# Update Flake
nix flake update

# Channel list
sudo nix-channel --list
# Channel update
sudo nix-channel --update