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Page 2.1
EMACS Editor and System Commands
CHAPTER 2.
GNU EMACS EDITOR AND SYSTEM COMMANDS.
2.1. What is the purpose of this document?
The purpose of this document is not to present you a fully described user manual, because there
exists one already, see 'Introduction to GNU EMACS on the Sun'. Then why is there a need for
some additional paper? We believe, that this document helps you to find your way quickly throug·
hout the ICAD·system.
2.2. What you have to know before you even touch the SUN system?
The system you work on is a SUN Sparc workstation. This computer is different from computers
like personal computers. An important difference is, that you never turn on or shut off the SUN
computer and SUN monitor. Only the system operator is allowed to do this.
Another issue is that of PATIEN CEo Though this computer is very fast, it can happen that after you
have given a command, it takes some time before something will happen. Especially in the
beginning you should learn to wait what is going to happen. Never start pushing randomly on all
the keys you can find, because you think something must happen. It might happen, that you have
given a wrong command or that you believe you have given a command. In these cases there is
always a way to turn back properly. In worst case you have given a command that causes a 'dead·
lock', which results in a 'deaf and blind' computer that ignores everything you tell him. When this
occures, don't pray but get some help of the system manager.
2.3. How to enter the SUN system?
SUN computers belong to computers that deal with the UNIX Operating System. For this reason
you have to log in with a log in name and a password. Be sure to obtain one from your instructor.
When you first sit down you see a "login:" prompt on the screen. Now the following actions have
to be taken:
1>
Type your log in name, followed by [RETURNJ-key.
2>
Type your password, followed by [RETURNl-key. Notice that your password is not
shown on the screen.
What happens then? The screen turns grey, showing you that the system is starting SunView (the
Sun windowing system), and the ICAD system. This takes several minutes, because the ICAD
system is being loaded.
EXERCISE 2.1:
#
Try to log in.
ICAD course Version: 1.1
Date: 27-01-92