In this chapter, we will perform a few additional tasks to prepare
for building the temporary system. We will create a directory in
$LFS for the installation of the
temporary tools, add an unprivileged user to reduce risk, and create
an appropriate build environment for that user. We will also explain
the unit of time we use to measure how long LFS packages take to
build, or “SBUs”, and give some information about
package test suites.