|
... unsubscribe econet Henry Fielding
list global This sends you a list of all available
switch gigabit ethernet Bitnet discussion groups. But be careful
-- the list is VERY long!
get refcard Sends you a list of other commands you
can use with a listserver, such as
commands for retrieving past postings
from a discussion group.
Each of these commands goes on a separate line in your message
(and you can use one or all of them).
If you want to get a list of
all Bitnet discussion ethernet cabling groups, send e-mail to
listserv@bitnic.educom.edu
Leave the "subject:" line blank and use the list global command.
When you subscribe to a Bitnet group, there are two important
differences from Usenet.
First, when you want to post a message for others to read in the
discussion group, you send a message to the group name at its Bitnet
address. Using Econet as an example, you would mail the message to:
econet@miamiu.bitnet
Note that this is different from the listserv address you used to
subscribe to the group to begin with. Use the listserv address ONLY
to subscribe to or unsubscribe from a discussion group. If you use the
discussion-group address to try to subscribe or unsubscribe, your message
will go out to every other subscriber, many of whom will think unkind
thoughts, which they may share with you in an e-mail message).
The second difference relates to sending an e-mail message to the
author of a particular posting. Usenet newsreaders such as rn and nn
let you do this with one key. But if you hit your R ethernet cabling key to respond to
a discussion-group message, your message will go to the listserver,
and from there to everybody else on the list! This can prove
embarrassing to you and annoying to others. To make sure your
message goes just to the person who wrote the posting, take down his
e-mail address from the posting and then compose a brand-new message.
Remember, also, that if you see an e-mail address like IZZY@INDYVMS, it's
a Bitnet address.
Two Bitnet lists will prove helpful for delving further into the
network. NEW-LIST tells you the names of new discussion groups. To
subscribe, send a message to listserv@ndsuvm1.bitnet:
sub NEW-LIST Your Name
INFONETS is the place to go when you have questions about Bitnet.
It is also first rate for help on questions about all major computer
networks and how to reach them.
To subscribe, send e-mail to info-nets-
request@think.com:
sub INFONETS Your Name
Both of these lists are also 10 100 ethernet hub available on Usenet, the former as
bit.listserv.new-list; the latter as bit.listserv.infonets (sometimes
bit.listserv.info-nets).
Chapter 6: TELNET
6.1 MINING THE NET
10 100 ethernet hub Like any large community, cyberspace has its libraries, places you
can go to look up information or take out a good book. Telnet is one of
your keys to these libraries.
Telnet is a program that lets you use the power of the Internet to
connect you to databases, library catalogs, and other information
resources around the world. Want to see what the weather's like in
Vermont? Check on crop conditions in Azerbaijan? Get more information
about somebody whose name you've seen online? Telnet lets you do this,
and more.
Alas, there's a big "but!'' Unlike the phone system, Internet is not
yet universal; not everybody can use all of its services. Almost all
colleges and universities on the Internet provide telnet access. So do
all of the for-fee public-access systems listed in Chapter 1. But the
Free-Net systems do not give you access to every telnet system. And if
you are using a public-access UUCP or Usenet site, you will not have
access to telnet. The main reason for this is cost. 10 100 ethernet hub Connecting to the
Internet can easily cost $1,000 or more for a leased, high-speed phone
line. Some databases and file libraries can be queried by e-mail,
however; we'll show you how to do that later on. In the meantime, the
rest of this chapter assumes you are connected to a site with at least
partial Internet access.
Most telnet sites are fairly easy to use and have online help systems.
Most also work best (and in some cases, only) with VT100 emulation.
Let's dive right in and try one.
At your host system's command line, type
telnet access.usask.ca
and hit enter. That's all you have to do to connect to a telnet site!
In this case, you'll be connecting to a service known as Hytelnet, which
is a database of computerized library catalogs and other databases
available through telnet. You should see something like this:
Trying 128.233.3.1 ...
Connected to access.usask.ca.
Escape character is '^]'.
Ultrix UNIX (access.usask.ca)
login:
Every telnet site has two addresses -- one composed of words that
are easier for switch gigabit ethernet people to remember; the other a numerical address better
suited for computers. The "escape character" is good to remember. When
all else fails, hitting your control key and the ] key at the same time
will disconnect you and return you to your host system. At the login
prompt, type
hytelnet
and hit enter.
You'll see something like this:
Welcome to HYTELNET
version 6.2
...................
What is HYTELNET? . Up/Down arrows MOVE
Library catalogs . Left/Right arrows SELECT
Other resources . ? for HELP anytime
Help files for catalogs .
Catalog interfaces . m returns here
Internet Glossary . q quits
Telnet tips .
Telnet/TN3270 escape keys .
Key-stroke commands .
10 100 ethernet hub
........................
HYTELNET 6.2 was written by Peter Scott,
U of Saskatchewan Libraries, Saskatoon, Sask, Canada.
1992
Unix and VMS software by Earl Fogel, Computing Services, U of S 1992
The first choice, "" will be highlighted. Use your down
and up arrows to move the cursor among the choices. Hit enter when you
decide on one. You'll get another menu, which in turn will bring up
text files telling you how to 10 100 ethernet hub connect to sites and giving any special
commands or instructions you might need. Hytelnet does have one quirk.
To move back to where you started (for example, from a sub-menu to a
main menu), hit the left-arrow key on your computer.
Play with the system. You might want to turn on your computer's
screen-capture, or at the very least, get out a pen and paper. You're
bound to run across some interesting telnet services that you'll want to
try -- and you'll need their telnet "addresses.''
As you move around Hytelnet, it may seem as if you haven't left
your host system -- telnet can work that quickly. Occasionally, when
network loads are heavy, however, you will notice a delay between the
time 10/100 ethernet hub you type a command or enter a request and the time the remote
service responds.
To disconnect from Hytelnet and return to your system, hit your q
key and enter.
Some telnet computers are set up so that you can only access them
through a specific "port." In those cases, you'll always see a number
after their name, for example: india.colorado.edu 13. It's important to
include that number, because otherwise, you may not get in.
In fact, try the above address. Type
telnet india.colorado.edu 13
and hit enter. You should see something like this:
Trying 128.138.140.44 ...
Followed very quickly by this:
telnet india.colorado.edu 13
Escape character is '^]'.
Sun Jan 17 14:11:41 1994
Connection closed by foreign host.
What we want is the middle line, which tells you the exact
Mountain Standard Time, as determined by a government-run atomic clock
in Boulder, Colo.
6.2 LIBRARY CATALOGS
Several hundred libraries around the world, from the Snohomish
Public Library in Washington State to the Library of Congress are now
available to you through telnet. You can use Hytelnet to find their
names, telnet addresses and use instructions.
Why would you want to browse a library you can't physically get to?
Many libraries share books, so if yours doesn't have what you're looking
for, you can tell the librarian where he or she can get it. Or if you live
in an area where the libraries are not yet online, you can use telnet to do
some basic bibliographic research before you head down to the local branch.
There ar ... |
