MAILING LISTS AND BITNET Usenet is not the only forum on the Net. Scores of "mailing lists" represent another way to interact with other Net users. Unlike Usenet messages, which are stored in one central location on your host system's computer, mailing-list messages are delivered right to your e-mail box, unlike Usenet messages. You have to ask for permission to join a mailing list. Unlike Usenet, where your message is distributed to the world, on a mailing list, you send your messages to a central moderator, who either re-mails it to the other people on the list or uses it to compile a periodic "digest" mailed to subscribers. Given the number of newsgroups, why would anybody bother with a mailing list? Even on Usenet, there are some topics that just might not generate enough interest for a newsgroup; for example, the Queen list, which is all about the late Freddie Mercury's band. And because a moderator decides who can participate, a mailing list can offer a degree of freedom to speak one's mind (or not worry about net.weenies) that is not necessarily possible on Usenet. Several groups offer anonymous postings -- only the moderator knows the real names of people who contribute. Examples include 12Step, where people enrolled in such programs as Alcoholics Anonymous can discuss their experiences, and sappho, a list limited to gay and bisexual women. You can find mailing addresses and descriptions of these lists in the news.announce.newusers newsgroup with the subject of "Publicly Accessible Mailing Lists." Mailing lists now number in the hundreds, so this posting is divided into three parts. If you find a list to which you want to subscribe, send an e- mail message to list-request@address where "list" is the name of the mailing list and "address" is the moderator's e-mail address, asking to be added to the list. Include your full e-mail address just in case something happens to your message's header along the way, and ask, if you're accepted, for the address to mail messages to the list. BITNET As if Usenet and mailing lists were not enough, there are Bitnet "discussion groups" or "lists." Bitnet is an international network linking colleges and universities, but it uses a different set of technical protocols for distributing information than the Internet or Usenet. It offers hundreds of discussion groups, comparable in scope to Usenet newsgroups. One of the major differences is the way messages are distributed. Bitnet messages are sent to your mailbox, just as with a mailing list. However, where mailing lists are often maintained by a person, all Bitnet discussion groups are automated -- you subscribe to them through messages to a "listserver" computer. This is a kind of robot moderator that controls distribution of messages on the list. In many cases, it also maintains indexes and archives of past postings in a given discussion group, which can be handy if you want to get up to speed with a discussion or just search for some information related to it. Many Bitnet discussion groups are now "translated" into Usenet form and carried through Usenet in the bit.listserv hierarchy. In general, it's probably better to read messages through Usenet if you can. It saves some storage space on your host system's hard drives. If 50 people subscribe to the same Bitnet list, that means 50 copies of each message get stored on the system; whereas if 50 people read a Usenet message, that's still only one message that needs storage on the system. It can also save your sanity if the discussion group generates large numbers of messages. Think of opening your e-mailbox one day to find 200 messages in it -- 199 of them from a discussion group and one of them a "real" e-mail message that's important to you. Subscribing and canceling subscriptions is done through an e- mail message to the listserver computer. For addressing, all listservers are known as "listserv" (yep) at some Bitnet address. This means you will have to add ".bitnet" to the end of the address, if it's in a form like this: listserv@miamiu. For example, if you have an interest in environmental issues, you might want to subscribe to the Econet discussion group. To subscribe, send an e-mail message to listserv@miamiu.bitnet Some Bitnet listservers are also connected to the Internet, so if you see a listserver address ending in ".edu", you can e-mail the listserver without adding ".bitnet" to the end. Always leave the "subject:" line blank in a message to a listserver. Inside the message, you tell the listserver what you want, with a series of simple commands: subscribe group Your Name To subscribe to a list, where "group" is the list name and "Your Name" is your full name, for example: subscribe econet Henry Fielding unsubscribe group Your Name To discontinue a group, for example: unsubscribe econet Henry Fielding list global This sends you a list of all available 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 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, 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 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 to him. 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 available on Usenet, the former as bit.listserv.new-list; the latter as bit.listserv.infonets (sometimes bit.listserv.info-nets). SS TELNET (Mining the Net, part I) 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 the WELL, Netcom and the World. But the Freenet 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. 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 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 . ........................ 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 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 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 Apr 5 14:11:41 1992 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. LIBRARY CATALOGS More than 200 libraries, from the Snohomish Public Library in Washington State to the Library of Congress and the libraries of Harvard University, 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 are several different database programs in use by online libraries. Harvard's is one of the easier ones to use, so let's try it. Telnet to hollis.harvard.edu. When you connect, you'll see: ***************** H A R V A R D U N I V E R S I T Y ***************** OFFICE FOR INFORMATION TECHNOLOGY *** *** *** *** VE *** RI *** *** *** *** HOLLIS (Harvard OnLine LIbrary System) ***** ***** **** TAS **** HUBS (Harvard University Basic Services) *** *** ***** IU (Information Utility) *** CMS (VM/CMS Timesharing Service) ** HOLLIS IS AVAILABLE WITHOUT ACCESS RESTRICTIONS ** Access to other applications is limited to individuals who have been granted specific permission by an authorized person. To select one of the applications above, type its name on the command line followed by your user ID, and press RETURN. ** HOLLIS DOES NOT REQUIRE A USERID ** EXAMPLES: HOLLIS (press RETURN) or HUBS userid (press RETURN) ===> Type hollis and hit enter. You'll see several screens flash by quickly until finally the system stops and you'll get this: WELCOME TO HOLLIS (Harvard OnLine Library Information System) To begin, type one of the 2-character database codes listed below: HU Union Catalog of the Harvard libraries OW Catalog of Older Widener materials LG Guide to Harvard Libraries and Computing Resources AI Expanded Academic Index (selective 1987-1988, full 1989- ) LR Legal Resource Index (1980- ) PA PAIS International (1985- ) To change databases from any place in HOLLIS, type CHOOSE followed by a 2-character database code, as in: CHOOSE HU For general help in using HOLLIS, type HELP. For HOLLIS news, type HELP NEWS. For HOLLIS hours of operation, type HELP HOURS. ALWAYS PRESS THE ENTER OR RETURN KEY AFTER TYPING YOUR COMMAND The first thing to notice is the name of the system: Hollis. Librarians around the world seem to be inordinately found of cutesy, anthropomorphized acronyms for their machines (not far from Harvard, the librarians at Brandeis University came up with Library On-Line User Information Service, or Louis; MIT has Barton). If you want to do some general browsing, probably the best bet on the Harvard system is to chose HU, which gets you access to their main holdings, including those of its medical libraries. Chose that, and you'll see this: THE HARVARD UNIVERSITY LIBRARY UNION CATALOG To begin a search, select a search option from the list below and type its code on the command line. Use either upper or lower case. AU Author search TI Title search SU Subject search ME Medical subject search KEYWORD Keyword search options CALL Call number search options OTHER Other search options For information on the contents of the Union Catalog, type HELP. To exit the Union Catalog, type QUIT. A search can be entered on the COMMAND line of any screen. ALWAYS PRESS THE ENTER OR RETURN KEY AFTER TYPING YOUR COMMAND. Say you want to see if Harvard has shed the starchy legacy of the Puritans, who founded the school. Why not see if they have "The Joy of Sex" somewhere in their stacks? Type TI Joy of Sex and hit enter. This comes up: HU: YOUR SEARCH RETRIEVED NO ITEMS. Enter new command or HELP. You typed: TI JOY OF SEX ******************************************************************************* ALWAYS PRESS THE ENTER OR RETURN KEY AFTER TYPING YOUR COMMAND. ------------------------------------------------------------------------------- OPTIONS: FIND START - search options HELP QUIT - exit database COMMAND? Oh, well! Do they have anything that mentions "sex" in the title? Try another TI search, but this time just: TI sex. You get: HU GUIDE: SUMMARY OF SEARCH RESULTS 2086 items retrieved by your search: FIND TI SEX ------------------------------------------------------------------------------ 1 SEX 2 SEX A 823 SEXA 827 SEXBO 831 SEXCE 833 SEXDR 834 SEXE 879 SEXIE 928 SEXJA 929 SEXLE 930 SEXO 965 SEXPI 968 SEXT 1280 SEXUA 2084 SEXWA 2085 SEXY ------------------------------------------------------------------------------- OPTIONS: INDEX (or I 5 etc) to see list of items HELP START - search options REDO - edit search QUIT - exit database COMMAND? If you want to get more information on the first line, type 1 and hit enter: HU INDEX: LIST OF ITEMS RETRIEVED 2086 items retrieved by your search: FIND TI SEX ------------------------------------------------------------------------------ SEX 1 geddes patrick sir 1854 1932/ 1914 bks SEX A Z 2 goldenson robert m/ 1987 bks SEX ABUSE HYSTERIA SALEM WITCH TRIALS REVISITED 3 gardner richard a/ 1991 bks SEX AETATES MUNDI ENGLISH AND IRISH 4 irish sex aetates mundi/ 1983 bks SEX AFTER SIXTY A GUIDE FOR MEN AND WOMEN FOR THEIR LATER YEARS 5 butler robert n 1927/ 1976 bks ------------------------------------------------------ (CONTINUES) ------------ OPTIONS: DISPLAY 1 (or D 5 etc) to see a record HELP GUIDE MORE - next page START - search options REDO - edit search QUIT - exit database COMMAND? Most library systems give you a way to log off and return to your host system. On Hollis, hit escape followed by xx One particularly interesting system is the one run by the Colorado Alliance of Research Libraries, which maintains databases for libraries throughout Colorado, the West and even in Boston. Telnet pac.carl.org. Follow the simple log-in instructions. When you get a menu, type 72 (even though that is not listed), which takes you to the Pikes Peak Library District, which serves the city of Colorado Springs. Several years ago, its librarians realized they could use their database program not just for books but for cataloging city records and community information, as well. Today, if you want to look up municipal ordinances or city records, you only have to type in the word you're looking for and you'll get back citings of the relevant laws or decisions. Carl will also connect you to the University of Hawaii library, which, like the one in Colorado Springs, has more than just bibliographic material online. One of its features is an online Hawaiian almanac that can tell you everything you ever wanted to know about Hawaiians, including the number injured in boogie-board accidents each year (seven). þ