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97 lines
2.6 KiB
97 lines
2.6 KiB
<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></refentrytitle>
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<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><option>--hash</option></arg>
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<arg><option>--revision</option></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 shows the version of the currently active NixOS
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configuration. For example:
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<screen>$ 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><literal>16.03</literal></term>
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<listitem><para>The NixOS release, indicating the year and month
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in which it was released (e.g. March 2016).</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>1011</literal></term>
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<listitem><para>The number of commits in the Nixpkgs Git
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repository between the start of the release branch and the commit
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from which this version was built. This ensures that NixOS
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versions are monotonically increasing. It is
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<literal>git</literal> when the current NixOS configuration was
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built from a checkout of the Nixpkgs Git repository rather than
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from a NixOS channel.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>6317da4</literal></term>
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<listitem><para>The first 7 characters of the commit in the
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Nixpkgs Git repository from which this version was
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built.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>Emu</literal></term>
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<listitem><para>The code name of the NixOS release. The first
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letter of the code name indicates that this is the N'th stable
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NixOS release; for example, Emu is the fifth
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release.</para></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><title>Options</title>
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<para>This command accepts the following options:</para>
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<variablelist>
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<varlistentry>
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<term><option>--hash</option></term>
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<term><option>--revision</option></term>
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<listitem>
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<para>Show the full SHA1 hash of the Git commit from which this
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configuration was built, e.g.
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<screen>$ 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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</variablelist>
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</refsection>
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</refentry>
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