tldr/pages/common/nix-store.md

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# nix-store
> Manipulate or query the Nix store.
> See also: `nix3 store`.
> More information: <https://nixos.org/manual/nix/stable/command-ref/nix-store.html>.
- Collect garbage, such as removing unused paths:
`nix-store --gc`
- Hard-link identical files together to reduce space usage:
`nix-store --optimise`
- Delete a specific store path (must be unused):
`nix-store --delete {{/nix/store/...}}`
- Show all dependencies of a store path (package), in a tree format:
`nix-store --query --tree {{/nix/store/...}}`
- Calculate the total size of a certain store path with all the dependencies:
`du -cLsh $(nix-store --query --references {{/nix/store/...}})`
- Show all dependents of a particular store path:
`nix-store --query --referrers {{/nix/store/...}}`