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+<refentry xmlns="http://docbook.org/ns/docbook"
+          xmlns:xlink="http://www.w3.org/1999/xlink"
+          xmlns:xi="http://www.w3.org/2001/XInclude">
+ <refmeta>
+  <refentrytitle><command>nixos-enter</command>
+  </refentrytitle><manvolnum>8</manvolnum>
+  <refmiscinfo class="source">NixOS</refmiscinfo>
+<!-- <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo> -->
+ </refmeta>
+ <refnamediv>
+  <refname><command>nixos-enter</command></refname>
+  <refpurpose>run a command in a NixOS chroot environment</refpurpose>
+ </refnamediv>
+ <refsynopsisdiv>
+  <cmdsynopsis>
+   <command>nixos-enter</command>
+   <arg>
+    <arg choice='plain'>
+     <option>--root</option>
+    </arg>
+     <replaceable>root</replaceable>
+   </arg>
+
+   <arg>
+    <arg choice='plain'>
+     <option>--system</option>
+    </arg>
+     <replaceable>system</replaceable>
+   </arg>
+
+   <arg>
+    <arg choice='plain'>
+     <option>-c</option>
+    </arg>
+     <replaceable>shell-command</replaceable>
+   </arg>
+
+   <arg>
+    <arg choice='plain'>
+     <option>--silent</option>
+    </arg>
+   </arg>
+
+   <arg>
+    <arg choice='plain'>
+     <option>--help</option>
+    </arg>
+   </arg>
+
+   <arg>
+    <arg choice='plain'>
+     <option>--</option>
+    </arg>
+     <replaceable>arguments</replaceable>
+   </arg>
+  </cmdsynopsis>
+ </refsynopsisdiv>
+ <refsection>
+  <title>Description</title>
+  <para>
+   This command runs a command in a NixOS chroot environment, that is, in a
+   filesystem hierarchy previously prepared using
+   <command>nixos-install</command>.
+  </para>
+ </refsection>
+ <refsection>
+  <title>Options</title>
+  <para>
+   This command accepts the following options:
+  </para>
+  <variablelist>
+   <varlistentry>
+    <term>
+     <option>--root</option>
+    </term>
+    <listitem>
+     <para>
+      The path to the NixOS system you want to enter. It defaults to
+      <filename>/mnt</filename>.
+     </para>
+    </listitem>
+   </varlistentry>
+   <varlistentry>
+    <term>
+     <option>--system</option>
+    </term>
+    <listitem>
+     <para>
+      The NixOS system configuration to use. It defaults to
+      <filename>/nix/var/nix/profiles/system</filename>. You can enter a
+      previous NixOS configuration by specifying a path such as
+      <filename>/nix/var/nix/profiles/system-106-link</filename>.
+     </para>
+    </listitem>
+   </varlistentry>
+   <varlistentry>
+    <term>
+     <option>--command</option>
+    </term>
+    <term>
+     <option>-c</option>
+    </term>
+    <listitem>
+     <para>
+      The bash command to execute.
+     </para>
+    </listitem>
+   </varlistentry>
+   <varlistentry>
+    <term>
+     <option>--silent</option>
+    </term>
+    <listitem>
+     <para>
+       Suppresses all output from the activation script of the target system.
+     </para>
+    </listitem>
+   </varlistentry>
+   <varlistentry>
+    <term>
+     <option>--</option>
+    </term>
+    <listitem>
+     <para>
+      Interpret the remaining arguments as the program name and arguments to be
+      invoked. The program is not executed in a shell.
+     </para>
+    </listitem>
+   </varlistentry>
+  </variablelist>
+ </refsection>
+ <refsection>
+  <title>Examples</title>
+  <para>
+   Start an interactive shell in the NixOS installation in
+   <filename>/mnt</filename>:
+  </para>
+<screen>
+<prompt># </prompt>nixos-enter --root /mnt
+</screen>
+  <para>
+   Run a shell command:
+  </para>
+<screen>
+<prompt># </prompt>nixos-enter -c 'ls -l /; cat /proc/mounts'
+</screen>
+  <para>
+   Run a non-shell command:
+  </para>
+<screen>
+# nixos-enter -- cat /proc/mounts
+</screen>
+ </refsection>
+</refentry>