Nix OS commands

Update:

nixos-rebuild switch

See what will change in an update:

nix-chanel --update
nixos-rebuild build
nix store diff-closures /var/run/current-system ./result

Ways to manage packages:

• nix-env: imperative install
• nixos-rebuild: declarative via config.nix
• nix-shell: only for one shell session

List installed packages:

nix-env -qa --installed '*'

Update channel

nix-channel --update
sudo nixos-rebuild switch
nix-env -u '*'