2020-07-24 10:56:19 +00:00
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Title: nix-collect-garbage
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2020-07-23 10:58:42 +00:00
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2020-07-24 10:56:19 +00:00
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# Name
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2020-07-23 10:58:42 +00:00
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2020-07-24 10:56:19 +00:00
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`nix-collect-garbage` - delete unreachable store paths
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2020-07-23 10:58:42 +00:00
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2020-07-24 10:56:19 +00:00
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# Synopsis
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2020-07-23 10:58:42 +00:00
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2020-07-24 10:56:19 +00:00
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`nix-collect-garbage` [`--delete-old`] [`-d`] [`--delete-older-than` *period*] [`--max-freed` *bytes*] [`--dry-run`]
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2020-07-23 10:58:42 +00:00
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# Description
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The command `nix-collect-garbage` is mostly an alias of [`nix-store
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2020-07-24 13:46:16 +00:00
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--gc`](nix-store.md#operation---gc), that is, it deletes all
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unreachable paths in the Nix store to clean up your system. However,
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it provides two additional options: `-d` (`--delete-old`), which
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deletes all old generations of all profiles in `/nix/var/nix/profiles`
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by invoking `nix-env --delete-generations old` on all profiles (of
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course, this makes rollbacks to previous configurations impossible);
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and `--delete-older-than` *period*, where period is a value such as
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`30d`, which deletes all generations older than the specified number
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of days in all profiles in `/nix/var/nix/profiles` (except for the
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generations that were active at that point in time).
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2020-07-23 10:58:42 +00:00
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# Example
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To delete from the Nix store everything that is not used by the current
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generations of each profile, do
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$ nix-collect-garbage -d
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