Acorn computer econet level 2/3 Manuale utente
Acorn
Econet
Level 2 and 3 File Server user guide
Within this publication the term "BBC" is used as an abbreviation for "British
Broadcasting Corporation"
412,018 Issue 2
February 1985
Written, designed and typeset by Baddeley Associates Limited, Cambridge
© Copyright Acorn Computers Limited 1985
Neither the whole or any part of the information contained in, or the
product described in, this manual may be adapted or reproduced in any
material form except with the prior written approval of Acorn Computers
Limited (Acorn Computers).
The product described in this manual and products for use with it, are
subject to continuous development and improvement. All information of a
technical nature and particulars of the product and its use (including the
information in this manual) are given by Acorn Computers in good faith.
However, it is acknowledged that there may be errors or omissions in this
manual. A list of details of any amendments or revisions to this manual
can be obtained upon request from Acorn Computers Technical Enquiries.
Acorn Computers welcome comments and suggestions relating to the
product and this manual.
All correspondence should be addressed to:
Technical Enquiries
Acorn Computers Limited
Cambridge Technopark 645
Newmarket Road
Cambridge
CB5 8PD
All maintenance and service on the product must be carried out by Acorn
Computers' authorised dealers. Acorn Computers can accept no liability
whatsoever for any loss or damage caused by service or maintenance by
unauthorised personnel. This manual is intended only to assist the reader
in the use of the product, and therefore Acorn Computers shall not be
liable for any loss or damage whatsoever arising from the use of any
information or particulars in, or any error or omission in, this manual, or
any incorrect use of the product.
2
Contents
Using Econet 5
Using commands 6
Getting going 7
Switching on 7
Logging on 7
Passwords 8
Finishing 9
Simple filing 10
Saving and loading BASIC programs 10
Displaying a catalogue 11
Naming files 12
Files and directories 12
Deleting files 13
Renaming files 13
Protecting your files 14
Getting information about your files 15
Filing system commands in BASIC programs 18
Using directories 19
Creating directories 19
Pathnames for files 19
Pathnames for directories 19
Displaying a sub-directory 21
Getting information about sub-directories 22
Selecting directories 23
Moving files between directories 23
The root directory 24
Displaying the root directory 24
Using other users' files 25
Access to others' files 25
Working with groups of files 27
Wildcards 27
Protecting groups of files 27
Other uses for wildcards 28
3
Using other discs 29
What happens when you log on 29
Selecting another disc 29
Using files from another disc 30
Machine-code and data files 31
Saving areas of memory 31
Loading an area of memory 32
Running a machine-code program 33
Libraries 34
Selecting libraries 35
Recording keystrokes in files 35
Setting up automatic start routines 37
Autostart at log-on 37
Reading and writing to files 39
The idea of random access 39
Opening a file 39
Using the pointer 41
Reading and writing 41
Closing the file 42
Other random access operations 42
Interlocks 43
Reading and writing groups of bytes 43
Printing 44
Communicating with other users 46
Using other filing systems 47
Reference section 48
Software versions 48
Commands 50
Command name abbreviations 53
Random access keywords 54
Error messages 56
Glossary 60
Index 62
4
Using Econet
Econet is a network — a set of computers connected together.
Each computer on the network is called a station. This guide
tells you how you can use Econet from your own station to
communicate with other computers on the network.
The most important station you'll be communicating with is the
file server. This is a computer attached to a device that can
record programs and data on to discs.
Through Econet, you can send work — for example, a program
you have written — to the file server, and ask it to store the
program on one of its discs. You can also instruct the file server
to retrieve what you've stored and put it back into your computer'
s memory: so, if you wanted to, you could get that program back
and run it again. Storing work is called saving; bringing it back is
called loading. With Econet, all the users on the network can
share the same file server, so they can save or load work
whenever they want to.
Your network may also include a computer connected up to a
printer: this is a printer server. If your Econet includes a printer
server, you will also be able to use the network to print out
copies of your work.
There will be a person looking after the day-to-day running of
your network — the network manager. If you have difficulties,
the network manager is the person to see.
This guide begins by explaining how you start a session of work
on the network, and then takes you through the rules for saving
and loading. After that, we explain all the other instructions you
can send to the file server and the printer server.
5
Using commands
Throughout this guide there are instructions for typing in
commands to which the following rules apply:
■ showing a word in [ ] means it is a key EXAMPLE: [
RETURN] means the RETURN key
■ descriptions in < > should be replaced by the information
required, without typing the brackets
EXAMPLE: <filename> means type the name of a file
■ type characters not in brackets exactly as they are shown
When you type in a command the computer will not carry it out
until you press [RETURN].
Most of the Econet commands can be abbreviated, to save you
time when you get used to using them. The abbreviations are
shown in the reference section at the back of this guide.
6
Getting going
Switching on
Switch on your BBC micro and your monitor.
Screen: BBC Computer 32K
Econet Station xxx
BASIC
xxx is the number of your station on the network. You are
now ready to use Econet.
If the message "Econet Station" is missing, hold down N while
pressing then releasing [BREAK]; or hold down [CTRL] and N
together while pressing and releasing [BREAK].
If the "Econet Station" message is still missing, tell your
network manager. If there is a "No clock" message, tell the
network manager straight away.
Logging on *1 AM
Whenever you start an Econet session, you have to identify
yourself to the file server, by typing in your identifier. If you are
in doubt about what yours should be, ask your network manager.
EXAMPLES
RPJ
JULIE
FORM3
To start working with the file server
type: *I AM <identifier>[RETURN]
If you get a message "User not known", ask your network
manager for help.
7
When logging on, you may have to specify the file server you
want to log on to. You will have to do this if your network has
more than one file server, or if your file server has a different
station number from the one Econet expects.
Type: *1 AM <number><identifier> [RETURN]
Your network manager will tell you exactly what number to
type.
Passwords * PASS
You can choose a password for yourself, which you type in when
logging on. This makes it impossible for other users who don't
know your password to log on using your identifier, and so gain
access to your files. Your password can be up to six characters
long, and can include letters and numbers. It is important not to
tell any other user what your password is — and to avoid
passwords that would be easy for other users to guess.
To set your password, log on, and
type: *PASS " " <your password>[RETURN]
From now on, you will have to give your password whenever
you log on, by
typing *I AM <identifier><password>[RETURN]
EXAMPLE
Type:
*I AM ROBERT ACORN[RETURN]
You may be able to prevent your password appearing on the
screen (where people looking over your shoulder might see it) by
going through this procedure:
Type: *1 AM <identifier> :[RETURN]
<password>[RETURN]
Your password will not appear as you type it in.
8
Questo manuale è adatto per i seguenti modelli
2
Indice
