In Chapter 1, Basic UNIX® System Concepts you were shown how to launch a
shell
. In this chapter, we will show you how to work with
it.
The shell
's main
asset is the number of existing utilities: there are thousands
of them, and each utility is devoted to a particular task. We
will only look at a (very) small number of these utilities here.
One of UNIX®'s greatest assets is the ability to combine
these utilities, as we shall see later.