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nixos-option — Inspect a NixOS configuration. More information: <https://nixos.org/manual/nixos/stable/index.html#s

Submitted by: @import:tldr-pages·Mar 2, 2026·

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configurationcommandnixos-optioncliinformationmoreinspectnixos

linux

Problem

How to use the nixos-option command: Inspect a NixOS configuration. More information: <https://nixos.org/manual/nixos/stable/index.html#sec-modularity>.

Solution

nixos-option — Inspect a NixOS configuration. More information: <https://nixos.org/manual/nixos/stable/index.html#sec-modularity>.

List all subkeys of a given option key:

nixos-option {{option_key}}

List current boot kernel modules:

nixos-option boot.kernelModules

List authorized keys for a specific user:

nixos-option users.users.{{username}}.openssh.authorizedKeys.{{keyFiles|keys}}

List all remote builders:

nixos-option nix.buildMachines

List all subkeys of a given key on another NixOS configuration:

NIXOS_CONFIG={{path/to/configuration.nix}} nixos-option {{option_key}}

Show recursively all values of a user:

nixos-option {{[-r|--recursive]}} users.users.{{user}}

Code Snippets

List all subkeys of a given option key

nixos-option {{option_key}}

List current boot kernel modules

nixos-option boot.kernelModules

List authorized keys for a specific user

nixos-option users.users.{{username}}.openssh.authorizedKeys.{{keyFiles|keys}}

List all remote builders

nixos-option nix.buildMachines

List all subkeys of a given key on another NixOS configuration

NIXOS_CONFIG={{path/to/configuration.nix}} nixos-option {{option_key}}

Context

tldr-pages: linux/nixos-option

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