Update cheatsheets

linux/nixos-option

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# 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 users.users.{{user}}`