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nix-collect-garbage

Delete unused and unreachable nix store paths. Generations can be listed using nix-env --list-generations. More information: https://nixos.org/releases/nix/latest/manual/#sec-nix-collect-garbage.
  • Delete all store paths unused by current generations of each profile:
    sudo nix-collect-garbage --delete-old
  • Simulate the deletion of old store paths:
    sudo nix-collect-garbage --delete-old --dry-run
  • Delete all store paths older than 30 days:
    sudo nix-collect-garbage --delete-older-than 30d

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