<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [ <!ENTITY % general-entities SYSTEM "../general.ent"> %general-entities; ]> <sect1 id="ch-preps-introduction"> <?dbhtml filename="introduction.html"?> <title>Introduction</title> <para>In this chapter, we will perform a few additional tasks to prepare for building the temporary system. We will create a set of directories in <filename class="directory">$LFS</filename> (in which we will install the temporary tools), add an unprivileged user, and create an appropriate build environment for that user. We will also explain the units of time (<quote>SBUs</quote>) we use to measure how long it takes to build LFS packages, and provide some information about package test suites.</para> </sect1>