mirror of
https://github.com/NixOS/nixpkgs.git
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138 lines
3.2 KiB
XML
138 lines
3.2 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-version</command>
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</refentrytitle><manvolnum>8</manvolnum>
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<refmiscinfo class="source">NixOS</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname><command>nixos-version</command></refname>
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<refpurpose>show the NixOS version</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>nixos-version</command>
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<arg>
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<option>--hash</option>
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</arg>
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<arg>
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<option>--revision</option>
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</arg>
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<arg>
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<option>--json</option>
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</arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsection>
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<title>Description</title>
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<para>
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This command shows the version of the currently active NixOS configuration.
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For example:
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<screen><prompt>$ </prompt>nixos-version
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16.03.1011.6317da4 (Emu)
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</screen>
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The version consists of the following elements:
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<variablelist>
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<varlistentry>
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<term>
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<literal>16.03</literal>
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</term>
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<listitem>
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<para>
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The NixOS release, indicating the year and month in which it was
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released (e.g. March 2016).
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<literal>1011</literal>
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</term>
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<listitem>
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<para>
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The number of commits in the Nixpkgs Git repository between the start of
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the release branch and the commit from which this version was built.
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This ensures that NixOS versions are monotonically increasing. It is
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<literal>git</literal> when the current NixOS configuration was built
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from a checkout of the Nixpkgs Git repository rather than from a NixOS
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channel.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<literal>6317da4</literal>
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</term>
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<listitem>
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<para>
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The first 7 characters of the commit in the Nixpkgs Git repository from
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which this version was built.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<literal>Emu</literal>
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</term>
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<listitem>
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<para>
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The code name of the NixOS release. The first letter of the code name
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indicates that this is the N'th stable NixOS release; for example, Emu
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is the fifth release.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsection>
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<refsection>
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<title>Options</title>
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<para>
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This command accepts the following options:
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</para>
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<variablelist>
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<varlistentry>
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<term>
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<option>--hash</option>
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</term>
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<term>
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<option>--revision</option>
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</term>
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<listitem>
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<para>
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Show the full SHA1 hash of the Git commit from which this configuration
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was built, e.g.
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<screen><prompt>$ </prompt>nixos-version --hash
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6317da40006f6bc2480c6781999c52d88dde2acf
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</screen>
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>--json</option>
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</term>
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<listitem>
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<para>
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Print a JSON representation of the versions of NixOS and the
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top-level configuration flake.
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</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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</refentry>
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