Now that you have completed this chapter, you
should have a firm understanding of the following:
- The main components of a computer
are RAM, CPU, I/O and hard disk. They are controlled by the operating
system.
- Most desktop operating systems are
intended for use by a single user. Network operating systems such
as UNIX are usually installed in servers that can support many
users and large networks.
- UNIX was originally developed at
Bell Labs and significant improvements were made at UC Berkeley
including the addition of networking capabilities. The industry
standard SVR4 led to the development of several current varieties
of UNIX including Sun Microsystems Solaris.
- The key pieces of the Solaris
Operating environment are the SunOS, the Open Network Computing (ONC)
protocols, and the Common Desktop Environment (CDE) graphical user
interface.
- The main components of the SunOS are
the Kernel, the Shell and the File System. The Kernel manages
hardware, daemons, swap space and the file system. The Shell is an
interpreter that provides an interface between the kernel and the
user. The File System manages and organizes information on the
hard disk.
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