nixpkgs/nixos/doc/manual/preface.xml

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<preface xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xml:id="preface">
<title>Preface</title>
<para>
This manual describes how to install, use and extend NixOS, a Linux
distribution based on the purely functional package management system
<link xlink:href="https://nixos.org/nix">Nix</link>, that is composed
using modules and packages defined in the
<link xlink:href="https://nixos.org/nixpkgs">Nixpkgs</link> project.
</para>
<para>
Additional information regarding the Nix package manager and the Nixpkgs
project can be found in respectively the
<link xlink:href="https://nixos.org/nix/manual">Nix manual</link> and the
<link xlink:href="https://nixos.org/nixpkgs/manual">Nixpkgs manual</link>.
</para>
<para>
If you encounter problems, please report them on the
<literal
xlink:href="https://discourse.nixos.org">Discourse</literal> or
on the <link
xlink:href="irc://irc.freenode.net/#nixos">
<literal>#nixos</literal> channel on Freenode</link>. Bugs should be
reported in
<link
xlink:href="https://github.com/NixOS/nixpkgs/issues">NixOS
GitHub issue tracker</link>.
</para>
<note>
<para>
Commands prefixed with <literal>#</literal> have to be run as root, either
requiring to login as root user or temporarily switching to it using
<literal>sudo</literal> for example.
</para>
</note>
</preface>