Name

       nix-store --verify - check Nix database for consistency

Synopsis

       nix-store --verify [--check-contents] [--repair]

Description

       The operation --verify verifies the internal consistency of the Nix database, and the consistency between
       the  Nix  database  and  the  Nix  store.  Any  inconsistencies  encountered  are automatically repaired.
       Inconsistencies are generally the result of the Nix store or database being modified by non-Nix tools, or
       of bugs in Nix itself.

       This operation has the following options:

       •  --check-contents

          Checks that the contents of every valid store path has not been altered by computing a SHA-256 hash of
          the contents and comparing it with the hash stored in the Nix database at build time. Paths that  have
          been modified are printed out. For large stores, --check-contents is obviously quite slow.

       •  --repair

          If any valid path is missing from the store, or (if --check-contents is given) the contents of a valid
          path  has  been modified, then try to repair the path by redownloading it. See nix-store --repair-path
          for details.

       {{#include ./opt-common.md}}

       {{#include ../opt-common.md}}

       {{#include ../env-common.md}}

                                                                                           nix-store --verify(1)