mirror of
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91 lines
2.1 KiB
XML
91 lines
2.1 KiB
XML
<refentry xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refmeta>
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<refentrytitle><command>nixos-option</command></refentrytitle>
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<manvolnum>8</manvolnum>
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<refmiscinfo class="source">NixOS</refmiscinfo>
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<!-- <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo> -->
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</refmeta>
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<refnamediv>
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<refname><command>nixos-option</command></refname>
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<refpurpose>inspect a NixOS configuration</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>nixos-option</command>
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<arg choice='plain'><replaceable>option.name</replaceable></arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsection><title>Description</title>
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<para>This command evaluates the configuration specified in
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<filename>/etc/nixos/configuration.nix</filename> and returns the properties
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of the option name given as argument.</para>
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<para>When the option name is not an option, the command prints the list of
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attributes contained in the attribute set.</para>
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</refsection>
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<refsection><title>Environment</title>
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<variablelist>
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<varlistentry>
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<term><envar>NIXOS_CONFIG</envar></term>
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<listitem>
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<para>Path to the main NixOS configuration module. Defaults to
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<filename>/etc/nixos/configuration.nix</filename>.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsection>
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<refsection><title>Examples</title>
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<para>Investigate option values:
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<screen>$ nixos-option boot.loader
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This attribute set contains:
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generationsDir
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grub
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initScript
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$ nixos-option boot.loader.grub.enable
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Value:
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true
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Default:
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true
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Description:
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Whether to enable the GNU GRUB boot loader.
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Declared by:
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"/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix"
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Defined by:
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"/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix"
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</screen></para>
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</refsection>
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<refsection><title>Bugs</title>
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<para>The author listed in the following section is wrong. If there is any
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other bug, please report to Nicolas Pierron.</para>
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</refsection>
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</refentry>
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