Warning
This program is experimental ⟨@docroot@/development/experimental-features.md#xp-feature-nix-command⟩ and its interface is subject to change.
Name
nix store optimise - replace identical files in the store by hard links
Synopsis
nix store optimise [option…]
Examples
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Optimise the Nix store:
nix store optimise
Description
This command deduplicates the Nix store: it scans the store for regular files with identical contents, and replaces them with hard links to a single instance.
Note that you can also set auto-optimise-store to true in nix.conf to perform this optimisation incrementally whenever a new path is added to the Nix store. To make this efficient, Nix maintains a content-addressed index of all the files in the Nix store in the directory /nix/store/.links/.
Options
Logging-related options
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--debug⟨#opt-debug⟩
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Set the logging verbosity level to ‘debug’.
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--log-format⟨#opt-log-format⟩ format
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Set the format of log output; one of
raw,internal-json,barorbar-with-logs.
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--print-build-logs⟨#opt-print-build-logs⟩ /-L
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Print full build logs on standard error.
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--quiet⟨#opt-quiet⟩
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Decrease the logging verbosity level.
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--verbose⟨#opt-verbose⟩ /-v
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Increase the logging verbosity level.
Miscellaneous global options
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--help⟨#opt-help⟩
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Show usage information.
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--offline⟨#opt-offline⟩
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Disable substituters and consider all previously downloaded files up-to-date.
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--option⟨#opt-option⟩ name value
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Set the Nix configuration setting name to value (overriding
nix.conf).
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--refresh⟨#opt-refresh⟩
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Consider all previously downloaded files out-of-date.
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--version⟨#opt-version⟩
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Show version information.
Note
See
man nix.conf⟨@docroot@/command-ref/conf-file.md#command-line-flags⟩ for overriding configuration settings with command line flags.