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nix/doc/manual/src/command-ref/nix-store/dump-db.md
Alexander Bantyev 36b059748d Split nix-env and nix-store documentation per-subcommand
Documentation on "classic" commands with many sub-commands are
notoriously hard to discover due to lack of overview and anchor links.
Additionally the information on common options and environment variables
is not accessible offline in man pages, and therefore often overlooked
by readers.

With this change, each sub-command of nix-store and nix-env gets its
own page in the manual (listed in the table of contents), and each own
man page.

Also, man pages for each subcommand now (again) list common options
and environment variables. While this makes each page quite long and
some common parameters don't apply, this should still make it easier
to navigate as that additional information was not accessible on the
command line at all.

It is now possible to run 'nix-store --<subcommand> --help` to display
help pages for the given subcommand.

Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
2023-03-30 09:46:28 +02:00

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Markdown

# Name
`nix-store --dump-db` - export Nix database
# Synopsis
`nix-store` `--dump-db` [*paths…*]
# Description
The operation `--dump-db` writes a dump of the Nix database to standard
output. It can be loaded into an empty Nix store using `--load-db`. This
is useful for making backups and when migrating to different database
schemas.
By default, `--dump-db` will dump the entire Nix database. When one or
more store paths is passed, only the subset of the Nix database for
those store paths is dumped. As with `--export`, the user is responsible
for passing all the store paths for a closure. See `--export` for an
example.
{{#include ./opt-common.md}}
{{#include ../opt-common.md}}
{{#include ../env-common.md}}