Name

       nix store optimise - replace identical files in the store by hard links

Synopsis

       nix store optimise [option…]

Examples

       •  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
       •  --debug

          Set the logging verbosity level to ‘debug’.

       •  --log-format format

          Set the format of log output; one of raw, internal-json, bar or bar-with-logs.

       •  --print-build-logs / -L

          Print full build logs on standard error.

       •  --quiet

          Decrease the logging verbosity level.

       •  --verbose / -v

          Increase the logging verbosity level.

   Miscellaneous global options
       •  --help

          Show usage information.

       •  --offline

          Disable substituters and consider all previously downloaded files up-to-date.

       •  --option name value

          Set the Nix configuration setting name to value (overriding nix.conf).

       •  --refresh

          Consider all previously downloaded files out-of-date.

       •  --version

          Show version information.

          Note

          See man nix.conf for overriding configuration settings with command line flags.

                                                                                          nix3-store-optimise(1)