Autor: Marek Wojcik (wojcik_at_dfki.uni-sb.de)
Data: Mon 18 Apr 1994 - 14:11:42 MET DST
Podaje kilka informacji na temat WWW, ktore kiedys rozni guru powysylali na
rozne listy. Przyznaje, robie to bez ich zgody - sa to jednak materialy
popularnonaukowe, wiec mam nadzieje, ze nie wezma mi tego za zle.
************
From: "Wojciech A. Myszka" <myszka_at_LDHPUX.IMMT.PWR.WROC.PL>
Subject: Pierwszy serwer WWW na Politechnice Wroclawskiej
Koledzy z Instytutu Telekomunikacji i Akustyki Politechniki Wroclawskiej,
nieco wstydliwie, ale uruchomili pierwszy na Politechnice Wroclawskiej i trzeci
w kraju serwer WWW (World Wide Web).
WWW prezentuje w przyjaznej formie hypertekstu (lub hipertekstu?) roznego
rodzaju dokumenty. Usluga ta zdobywa coraz wieksza populatnosc laczc w sobie
rowniez zalety gophera i ftp.
Co trzeba zrobic aby z tego korzystac?
1. Komputery UNIXowe nalezy zdobyc i skompilowac program lynx lub Mosaic
(pierwszy dziala na zwyklym terminalu, drugi w srodowisku XWindows).
Zrodla dostepne sa na komputerze ldhpux.immt.pwr.wroc.edu.pl w kartotece
pub/lynx
2. Komputery DOSowe... No coz tu jest gorzej, oprogramowanie dziala w srodowisku
MS Windows i wymaga winsock.dll w wersji 1.1. Program Cello znajduje sie
w kartotece /pub/gopher na komputerze ldhpux. Jest tez program WinMosaic.
Aktualne wersje oprogramowania mozna znalezc w wielu miejscach sieci. Powinno
byc na komputerze ftp.fuw.edu.pl, galaxy.uci.agh.edu.pl. Jest na pewno
na ftp.sunic.se i na komputerze swdsrv.edvz.univie.ac.at.
gopherem mozna poczytac tzw. faq (frequently asked questions) grupy dyskusyjnej
comp.infosystems.www. Znajduja sie one w kartotece:
6. Rozne informacje i zbiory
i dalej
9. Rozne informacje o sieci Internet/
i
9. WWW.faq
Warto tez zapoznac sie z URL (Universal Resource Locator) pozwalajacym latwo
wskazywac rozne informacje znajdujace sie w sieci. W tym przypadku ma on postac:
gopher://ldhpux.immt.pwr.wroc.pl:70/00/pub/internet_info/WWW.faq
lynx/www/Mosaic to rozumie!
Dziekuje kolegom z ITA, pozdrawiam wszystkich
Wojtek
- --
Wojciech A. Myszka myszka_at_ldhpux.immt.pwr.wroc.pl
Technical University of Wroclaw, Institute of Material Science
and Technical Mechanics, Smoluchowskiego str. 25
50-370 Wroclaw, Poland, tel. (+48 71) 21-50-28, fax () 21-12-35
- --
GOVERNMENT ECONOMIST VIRUS: Nothing works, but all your diagnostic software
says everything is fine.
*************************
From: Szymon Sokol <szymon_at_UCI.AGH.EDU.PL>
Subject: WWW
WWW (World Wide Web) to rozproszony system informacyjny (przypominajacy Gophera)
opracowany w CERNie. Podstawowa roznica w stosunku do Gophera: o ile tamten
opiera sie o dosc prosta strukture z dwoma tylko rodzajami dokumentow (listki
drzewa to dokumenty koncowe, np. teksty ASCII, a wezly posrednie to menu
z odsylaczami do innych menu i/lub dokumentow koncowych), o tyle WWW opiera sie
o idee hypertextu.
Co to jest hypertext? Kto korzystal z helpa w MS-Windows albo np. w Borland C,
ten juz wie (choc moze nie wie, ze to sie nazywa hypertext, tak jak bohater
"Mieszczanina szlachcicem" Moliera nie wiedzial, ze mowi proza ;-) ). Ogolnie,
hypertext to tekst, w ktorym niektore fragmenty moga byc wyroznione i stanowic
odsylacze do innych tekstow. Wybranie (mysza, czy strzalkami, czy na co tam
pozwala dana platforma sprzetowo-programowa) takiego odsylacza powoduje
przejscie do innego tekstu, ktory rowniez moze zawierac odsylacze itd.
W WWW (w odroznieniu od Gophera) nie ma podzialu na dokumenty koncowe i menu -
kazdy dokument jest hypertextem, i moze zawierac odsylacze do innych dokumentow.
Oczywiscie, moga istniec dokumenty bez zadnych dalszych odsylaczy, np. stare,
poczciwe zbiory tekstowe (ASCII) lub obrazki w formacie GIF czy jakims innym.
Kazdy odsylacz prowadzi do jakiegos dokumentu, ktory moze znajdowac sie
ZUPELNIE GDZIE INDZIEJ - tzn. na innym serwerze WWW (podobnie jak mialo to
miejsce w Gopherze).
Juz sama idea hypertextu powoduje, ze WWW jest znacznie sympatyczniejsze od
Gophera. Dodatkowa przewage WWW zapewnia rozwiniecie idei hypertextu do tzw.
hypermediow. Co to sa hypermedia? Hypertext wzbogacony o grafike, dzwiek,
animacje, i co jeszcze ludzie zdolaja wymyslic. Tak wiec, w dokumencie WWW
mozemy miec tekst przepleciony z ilustracjami (co w Gopherze bylo nieosiagalne),
a wybranie odsylacza moze spowodowac np. odtworzenie filmu animowanego (format
MPEG) lub dzwieku (format .au).
Oczywiscie, zeby korzystac z mozliwosci hypermedialnych, trzeba dysponowac
stacja robocza lub przynajmniej X-terminalem - w kazdym razie, trzeba miec
srodowisko graficzne. Istnieje rowniez klient tekstowy WWW (nawet kilka, ale
najlepszy nazywa sie Lynx; mozna go znalezc na galaxy.uci.agh.edu.pl w katalogu
/pub/network/infosystems/lynx), ktory radzi sobie z tekstem, a ilustracje
zastepuje przez "[IMAGE]", co nalezy czytac "wyobraz sobie, ze tu jest obrazek"
;-). Ja jednak polecam korzystanie z klienta graficznego - interfejs tekstowy
odbiera polowe przyjemnosci w korzystaniu z WWW.
Najladniejszym klientem graficznym WWW jest NCSA Mosaic. Istnieja wersje pod
X Windows dla Suna, SGI, HP, a zreszta uruchomienie na jakiejs innej platformie
(DEC, IBM, SCO, Linux) nie powinno stanowic problemu. Istnieja rowniez wersje
(na razie niedopracowane) dla MS-Windows i Macintosha.
Mosaic jest dostepny przez FTP z ftp.ncsa.uiuc.edu:/Mosaic (wersja zrodlowa i
kompilowane wersje dla Sun, SGI, HP), a takze z galaxy.uci.agh.edu.pl
(/pub/network/infosystems/mosaic, wersja zrodlowa i binaria dla Suna ).
Zycze milej zabawy,
Szymon Sokol
******************
WWW -- World Wide Web[1]
Wojciech Myszka
myszka_at_ldhpux.immt.pwr.wroc.pl
16 lutego 1994
WWW (World Wide Web - ogolnoswiatowa pajeczyna) jest jednym z najnowszych
systemow informacyjnych dostepnych w sieci Internet. System ten bazuje na
technologii zwanej hypertekst (a moze hipertekst?). Glowne prace proj System
ten (i jego narzedzia) rozwijaja sie bardzo burzliwie, stad nie zawsze i nie
wszystko dziala tak jak mozna tego oczekiwac.
Jak sie zapoznac z tym systemem? Najprosciej (choc nie jest to najlepsze
rozwiazanie) nalezy korzystajac z programu telnet polaczyc sie z kompu co
automatycznie uruchamia program czytania hypertekstu (z angielska browser).
Jest to najprostszy z programow nie zakladajacy zadnej specjalnej wiedzy o
terminalu uzytkownika.
Jezeli program sie spodoba nalezy zdobyc go dla siebie. Sytuacja jest o tyle
dobra, ze autorzy oprogramowania przygotowuja do publicznego
rozpowszechniania, nie tylko zrodla programu (w jezyku C), ale rowniez gotowe
programy wykonywalne na najbardziej popularne platformy sprzetowe.
Oprogramowanie mozna zdobyc rowniez na komputerze info.cern.ch za pomoca
programu ftp.
1 Co to jest hypertekst?
Hypertekst to taka metoda prezentacji informacji, w ktorej wybrane slowa
tekstu moga (po wskazaniu) dostarczac dodatkowych informacji. (Jezeli ktos
zna MS-Windows i jego Help to wie wszystko o hypertekscie i jego
wykorzystaniu.) Oznacza to, ze wybrane slowa tekstu sa odnosnikami do innych
informacji, ktor plik, obrazek, dzwiek, animacja, cokolwiek...
Caly urok systemu WWW polega na tym, ze odsylacz moze wskazywac informacje
znajdujace sie na zupelnie innym komputerze, w innym koocu swiata.
Problem polega na tym, ze ciagle jeszcze nie ma zbyt wiele prawdziwie
hypertekstowych dokumentow (chociaz przybywaja w szybkim tempie). Drugi jest
z duzymi wymaganiami na przepustowosc sieci jakie naklada system WWW
(zwlaszcza, jezeli chcemy korzystac z dokumentow hypertekstowych i prawdziwie
multimedialnych).
2 Jak z tego skorzystac?
Jezeli mamy dostep do komputera UNIXowego lub pracujacego pod VMS-em sprobujmy
napisac:
www
lub
lynx
albo (jezeli pracujemy w srodowisku X-Windows)
Mosaic
lub tez
Viola
Jezeli to nie zadziala - trudno; musimy skorzystac z publicznie dostepnego
konta, na ktoryms z komputerow (np., wspominany juz info.cern.ch)
Jak bedzie wygladal ekran trudno przewidziec - zalezy to od rodzaju programu
(najprymitywniejszy jest www, lynx nieco bardziej zaawansowany,
najprzyjemniej, niewatpliwie pracuje siqe w srodowisku Windowsowym) i od
lokalnej konfiguracji oprogramowania.
To co ogolnie mozna powiedziec: przed oczyma bedziemy mieli "strone" (ekran)
tekstu, ktorego pewne fragmenty beda w sposob wyrazny wyroznione:
- bedzie przy nich liczba w nawiasach kwadratowych: [3] (WWW),
- slowo (grupa slow) bedzie napisana w inwersji (czrno na bialym"), inne beda
wytluszczone - lynx,
- slowo (grupa slow) bedzie podkreslona (wersje okienkowe).
Slowo wybieramy piszac: jego numer, klawisz Enter powoduje przejscie do nowej
strony (w pierwszym przypadku); przesuwajac podswietlenie na wybrana pozycje
(za pomoca klawiszy ze strzalkami, jezeli te nie dzialaja uzywamy klawiszy j
lub 2 - dol, k, 8 - gora, h, 4 - lewo, l, 6 - prawo), spacja powoduje
przejscie do nastepnej strony (w przypadku drugim); w obu przypadkach ?
powoduje wyswietlenie podpowiedzi. Koniecznie nalezy ja przestudiowac, gdyz
opisane sa tam inn oprogramowania, o ktorych tu nie wspominam.
W wersjach "okienkowych" uzywamy myszy do wskazania pozycji, "suwakow" do
przemieszczania tekstu w okienku i mozemy wybierac rozne opcje z menu
znajdujacych sie w obudowie" okna. Dodatkowo w wersji okienkowej w tekscie
moga polawiac sie ilustracje (Jezeli korzystamy ze stosunkowo wolnych linii
polaczeniowych warto wybrac uniemozliwia wlaczanie rysunkow do tekstu).
3 Universal Resource Locator
System WWW opiera sie na jednolitym wskazywaniu roznych zasobow sieciowych,
nazywa sie on URL (Universal Resource Locator). Jest to zwiezle wskazanie na
zasob podajace:
1. protokol transmisji (http, gopher, ftp, news ),
2. komputer, na ktorym jest on dostepny,
3. numer portu" przez ktory nalezy sie z komputerem komunikowac,
4. miejsce w strukturze plkow, gdzie sie on znajduje.
Wygladac on moze na przyklad tak:
http://info.fuw.edu.pl:80/hypertext/zasoby_l.txt
lub tak
ftp://ldhpux.immt.pwr.wroc.pl/www/polskie.html
Pierwsze pole kooczy sie na dwu ukosnikach, nazwa komputera kooczy sie
dwukropkiem lub ukosnikiem, po dwukropku podany jest numer portu (nie za
wystapic), ostatnie pole to nazwa pliku od ukosnika do kooca linii.
Podajac jako argument w wywolaniu programu URL uzyskujemy od razu polaczenie"
z tym zasobem, ktorego szukamy.
4 Do czego wykorzystywac system WWW?
Trudno powiedziec... Generalnie do przegladania roznego rodzju informacji.
Jezeli dodamy do tego nastepujace fakty:
1. oprogramowanie znakomicie wspolpracuje z gopherem (mogac go prawie
calkowicie zastapic),
2. oprogramowanie wspolpracuje z ftp - mozna go uzyc zamiast niego,
3. stworzono procedury pozwalajace na wspolprace z systemem baz danych
archie,
4. istnieja nawet procedury pozwalajace zlozyc zamowienie (na kwiaty, na
przyklad)
i to ze nie sa to pelne mozliwosci systemu...
No coz - radze sprobowac!
Literatura
[1] Ed Krol. The Whole Internet User's Guide & Catalog. A Nutchell Handbook.
O'Reilly & Associates, Inc., Sebastopol, CA, dec 1992. Znakomity
przewodnik po Sieci, zawierajqacy mnqostwo interesujacych informacji.
- ---------- cut ------------------------------------------------------
-- Wojciech A. Myszka myszka_at_ldhpux.immt.pwr.wroc.pl Technical University of Wroclaw, Institute of Material Science and Technical Mechanics, Smoluchowskiego str. 25 50-370 Wroclaw, Poland, tel. (+48 71) 21-50-28, fax () 21-12-35 ************************* From: warman_at_fuw.edu.pl World-Wide Web (Kacper.Nowicki_at_fuw.edu.pl) - ---------------------------------------------------------------------- Date: Fri, 21 Jan 94 15:29:32 +0100 From: Kacper.Nowicki_at_fuw.edu.pl To: warman_at_fuw.edu.pl Subject: World-Wide Web Message-ID: <9401211429.AA27384_at_ccfs1.fuw.edu.pl> Czy ogladaliscie juz World-Wide Web'a ? Najlepiej w tym celu uzyc programu Mosaic (pod X Windows, MS Windows lub na Mac'a) zciagnac go mozna z ftp.ncsa.uiuc.edu /Mosaic, albo jesli juz zupelnie nie macie okienek na Waszym komputerze, to tekstowo, przy pomocy Lynx'a (ftp2.cc.ukans.edu /pub/lynx). Zajrzyjcie potem do serwera na Wydziale Fizyki UW http://info.fuw.edu.pl/welcome.html Zbieramy wszelkie ciekawe/uzyteczne informacje ktore przez WWW daja sie prezentowac. Szczegolnie brak nam aktualnych danych o Polsce do Polish Home Page, nowosci z Warszawy etc. Jezeli macie, to dajcie znac :^) Mosaic (a w przyszlosci rowniez Lynx) moze byc narzedziem do przekazywania informacji po polsku (czyli z ogonkami), wciaz jednak brakuje przyzwoitych fontow X'owych Latin-2. Czy ktos o takich nie slyszal ? Kacper - ------------------------------------------------------------------ Kacper Nowicki e-mail: kacper_at_fuw.edu.pl Warsaw University ========================= Institute of Experimental Physics Hoza 69, 00-681 Warszawa fax: (+48)(22) 294309 Poland (+48) 39121805 From: "Ozimek Jaroslaw (CATS)" <duq1u490_at_CS.PAISLEY.AC.UK> Subject: WWW Dziekuje za pelna odpowiedz na temat WWW. W miedzyczasie, przegladajac komputery pozwalajace na publiczne uzywanie gophera znalazlem publicznego WWW. Komputer miesci sie w Michigan State University i jest eksperymentalnym serwisem WWW. Adres: telnet gopher.msu.edu [35.8.2.61] jako haslo nalezy wpisac: web Podczas "plataniny w sieci" znalazlem tez efemeryde pod nazwa web.msu.edu - podobno tez publiczny serwer www. Podobno, bo to wszystko co udalo mi sie z tym zrobic. Nawet u mnie na Uniwersytecie, gdzie jest dosc szeroka bramka do internetu, praca trwa dosc wolno. Praca z komputerow na PWr bedzie chyba duzo bardziej meczaca - niestety mniejsza bramka. Co do ksiazki Ed Krola 'The Whole Intermet ...' - u mnie w szkole jej nie ma, kolega z Caledonian University (Glasgow) mowil mi, ze jest tam tylko jeden egz. i 7 chetnych w kolejce. Wypada chyba poszukac innych ksiazek (pomocnym moze byc gopher ...). Dla majacych problemy moge udostepnic moja kompilacje tytulow. Pozdrowienia z coraz zimniejszej Szkocji Jarek Ozimek - ------------------------------------------------------------------------------- Jaroslaw Ozimek | - ---------------------------------------------------------------| University of Paisley, Scotland | duq1u490_at_uk.ac.paisley.cs (within UK) | duq1u490%cs.paisley.ac.uk_at_nsfnet-relay.ac.uk (Internet sites) | duq1u490%cs.paisley.ac.uk_at_earn-relay.ac.uk (Bitnet sites) | - ---------------------------------------------------------------| Technical University of Wroclaw, Poland | jozimek_at_amargosa.ict.pwr.wroc.pl | - ------------------------------------------------------------------------------- From: rzm_at_oso.chalmers.se (Rafal Maszkowski) Adresy WWW w pl: www.uci.agh.edu.pl, www.fuw.edu.pl R. - -- Rafal Maszkowski rzm_at_oso.chalmers.se rzm_at_mat.uni.torun.pl <-finger for public snail: Omgangen 464-82, 412-80 Goteborg, Sweden; tel: +46-31-7780831 key Opinia publiczna powinna byc zaalarmowana swoim nieistnieniem - St. J. Lec **************** WorldWideWeb - Executive Summary The WWW project merges the techniques of information retrieval and hypertext to make an easy but powerful global information system. The project started with the philosophy that much academic information should be freely available to anyone. It aims to allow information sharing within internationally dispersed teams, and the dissemination of information by support groups. Reader view The WWW world consists of documents, and links. Indexes are special documents which, rather than being read, may be searched. The result of such a search is another ("virtual") document containing links to the documents found. A simple protocol ("HTTP") is used to allow a browser program to request a keyword search by a remote information server. The web contains documents in many formats. Those documents which are hypertext, (real or virtual) contain links to other documents, or places within documents. All documents, whether real, virtual or indexes, look similar to the reader and are contained within the same addressing scheme. To follow a link, a reader clicks with a mouse (or types in a number if he or she has no mouse). To search and index, a reader gives keywords (or other search criteria). These are the only operations necessary to access the entire world of data. Information provider view The WWW browsers can access many existing data systems via existing protocols (FTP, NNTP) or via HTTP and a gateway. In this way, the critical mass of data is quickly exceeded, and the increasing use of the system by readers and information suppliers encourage each other. Making a web is as simple as writing a few SGML files which point to your existing data. Making it public involves running the FTP or HTTP daemon, and making at least one link into your web from another. In fact, any file available by anonymous FTP can be immediately linked into a web. The very small start-up effort is designed to allow small contributions. At the other end of the scale, large information providers may provide an HTTP server with full text or keyword indexing. The WWW model gets over the frustrating incompatibilities of data format between suppliers and reader by allowing negotiation of format between a smart browser and a smart server. This should provide a basis for extension into multimedia, and allow those who share application standards to make full use of them across the web. This summary does not describe the many exciting possibilities opened up by the WWW project, such as efficient document caching. the reduction of redundant out-of-date copies, and the use of knowledge daemons. There is more information in the online project documentation, including some background on hypertext and many technical notes. Try it A prototype (very alpha test) simple line mode browser is currently available in source form from node info.cern.ch [currently 128.141.201.74] as /pub/WWW/WWWLineMode_0.9.tar.Z. Also available is a hypertext editor for the NeXT using the NeXTStep graphical user interface, and a skeleton server daemon. Documentation is readable using www (Plain text of the instalation instructions is included in the tar file!). Document http://info.cern.ch/hypertext/WWW/TheProject.html is as good a place to start as any. Note these coordinates may change with later releases. - _________________________________________________________________ **************** The following information was retrieved from CERN (the European Particle Physics Laboratory) in Geneva, Switzerland. This information was obtained using the CERN Information Service of the World-Wide Web global information initiative, additional information is available via telnet and anonymous FTP at: info.cern.ch. Summary -- /WWW WORLDWIDEWEB - SUMMARY The WWW[1] project merges the techniques of information retrieval and hypertext to make an easy but powerful global information system. The project is based on the philosophy that much academic information should be freely available to anyone. It aims to allow information sharing within internationally dispersed teams, and the dissemination of information by support groups. Originally aimed at the High Energy Physics community, it has spread to other areas and attracted much interest in user support, resource discovery and collaborative work areas. READER VIEW The WWW world consists of documents, and links. Indexes are special documents which, rather than being read, may be searched. The result of such a search is another ("virtual") document containing links to the documents found. A simple protocol (" HTTP[2] ") is used to allow a browser program to request a keyword search by a remote information server. The web contains documents in many formats. Those documents which are 1-8, Back, <RETURN> for more, Quit, or Help: Summary -- /WWW (44/88) hypertext, (real or virtual) contain links to other documents, or places within documents. All documents, whether real, virtual or indexes, look similar to the reader and are contained within the same addressing scheme. To follow a link, a reader clicks with a mouse (or types in a number if he or she has no mouse). To search and index, a reader gives keywords (or other search criteria). These are the only operations necessary to access the entire world of data. INFORMATION PROVIDER VIEW The WWW browsers can access many existing data systems via existing protocols (FTP, NNTP) or via HTTP and a gateway. In this way, the critical mass of data is quickly exceeded, and the increasing use of the system by readers and information suppliers encourage each other. Making a web is as simple as writing a few SGML[3] files which point to your existing data. Making it public involves running the FTP or HTTP daemon[4] , and making at least one link into your web from another. In fact, any file available by anonymous FTP can be immediately linked into a web. The very small start-up effort is designed to allow small contributions. At the other end of the scale, large information providers may provide an HTTP 1-8, Back, Up, <RETURN> for more, Quit, or Help: Summary -- /WWW (66/88) server with full text or keyword indexing. This may allow access to a large existing database without changing the way that database is managed. Such gateways have already been made into Digital's VMS/Help, Technical Univerity of Graz's "Hyper-G", and Thinking Machine's "W.A.I.S." systems. The WWW model gets over the frustrating incompatibilities of data format between suppliers and reader by allowing negotiation of format between a smart browser and a smart server. This should provide a basis for extension into multimedia, and allow those who share application standards to make full use of them across the web. This summary does not describe the many exciting possibilities opened up by the WWW project, such as efficient document caching. the reduction of redundant out-of-date copies, and the use of knowledge daemons. There is more information in the online project documentation, including some background on hypertext and many technical notes. TRY IT You can try the simple line mode browser[5] by telnetting to info.cern.ch (no user or password. From UK JANET, use the Gateway[6]). You can also find out more about WWW in this way. This is the least sophisticated browser -- 1-8, Back, Up, <RETURN> for more, Quit, or Help: Summary -- /WWW (88/88) remember that the window-oriented ones are much smarter! It is much more efficient to install a browser on your own machine. The line mode browser is currently available in source form by anonymous FTP from node info.cern.ch [currently 128.141.201.74] as /pub/www/src/WWWLineMode_v.vv.tar.Z. (v.vv is the version number - take the latest.) Also available is a hypertext editor[7] for the NeXT (WWWNeXTStepEditor_v.vv.tar.Z), the ViolaWWW browser for X11, and a skeleton server daemon (WWWDaemon_v.vv.tar.Z). Documentation is readable using www. A plain text version of the installation instructions is included in the tar file! Printable (postscript) documentation and articles are in /pub/www/doc _________________________________________________________________ Tim BL[8] Read Me WORLDWIDEWEB DISTRIBUTED CODE See the CERN copyright[1] . This is the README file which you get when you unwrap one of our tar files. These files contain information about hypertext, hypertext systems, and the WorldWideWeb project. If you have taken this with a .tar file, you will have only a subset of the files. Archive Directory structure Under /pub/www, besides this README file, you'll find bin, src and doc directories. The main archives are as follows src/WWWLineMode_v.vv.tar.Z The Line mode browser - all source, and binaries for selected systems. WWWLineModeDefaults.tar.Z A subset of WWWLineMode_v.vv.tar.Z. Basic documentation, and our current home page. src/WWWNextStepEditor.tar.Z The Hypertext Browser/editor for the NeXT -- source and binary. src/WWWDaemon_v.vv.tar.Z The HTTP daemon, and WWW-WAIS gateway programs. doc/WWWBook.tar.Z A snapshot of our internal documentation - we prefer you to access this on line -- see warnings below. bin/xxx/www Executable binaries for system xxx Generated Directory structure The tar files are all designed to be unwrapped in the same (this) directory. They create different parts of a common directory tree under that directory. There may be some duplication. They also generate a few files in this directory: README.*, Copyright.*, and some installation instructions (.txt). NeXTStep Browser/Editor The browser for the NeXT is those files contained in the application directory WWW/Next/Implementation/WorldWideWeb.app and is compiled.Whe you install the app, you may want to configure the default page, WorldWideWeb.app/default.html. These must point to some useful information! You should keep it up to date with pointers to info on your site and elsewhere. If you use the CERN home page note there is a link at the bottom to the master copy on our server. Line Mode browser Binaries of this for some systems are in subdirectories of /pub/www/bin. If the binary exists for your system, take that and also the /pub/www/WWWLineModeDefaults.tar.Z. Unwrap the documentation, and put (link) its directory into /usr/local/lib/WWW on your machine. Put the www executable into your path somewhere, and away you go. If no binary exists, procede as follows. Take the source tar file WWWLineMode_v.vv.tar.Z , uncompress and untar it. You will then find the line Mode browser in WWW/LineMode/Implementation/... (See Installation notes[2] ) Subdirectories to that directory contain Makefiles for systems to which we Read Me (122/121) If no binary exists, procede as follows. Take the source tar file WWWLineMode_v.vv.tar.Z , uncompress and untar it. You will then find the line Mode browser in WWW/LineMode/Implementation/... (See Installation notes[2] ) Subdirectories to that directory contain Makefiles for systems to which we have already ported. If your system is not among them, make a new subdirectory with the system name, and copy the Makefile from an existing one. Change the directory names as needed. PLEASE INFORM US OF THE CHANGES WHEN YOU HAVE DONE THE PORT. This is a condition of your use of this code, and will save others repeating your work, and save you repeating it in future releases. Whe you install the browsers, you may want to configure the default page. This is /usr/local/lib/WWW/default.html for the line mode browser. This must point to some useful information! You should keep it up to date with pointers to info on your site and elsewhere. If you use the CERN home page note there is a link at the bottom to the master copy on our server. Some basic documentation on the browser is delivered with the home page in the directory WWW/LineMode/Defaults. A separate tar file of that directory (WWWLineModeDefaults.tar.Z) is available if you just want to update that. The rest of the documentation is in hypertext, and so wil be readable most easily with a browser. We suggest that after installing the browser, you browse through the basic documentation so that you are aware of the options and customisation possibilities for example. Documentation The archive /pub/www/doc/WWWBook.tar.Z is an extract of the text from the WorldWideWeb (WWW) project documentation. This is a snapshot of a changing hypertext system. The text is provided as example hypertext only, not for general distribution. The accuracy of any information is not guaranteed, and no responsibility will be accepted by the authors for any loss or damage due to inaccuracy or omission. A copy of the documentation is inevitably out of date, and may be inconsistent. There are links to information which is not provided in that tar file. If any of these facts cause a problem, you should access the original master data over the network using www, or mail us. Servers The Daemon tar file contains (in this release) the code for the basic HTTP daemon for serving files, and also for the WWW-WAIS gateway. To compile the WAIS gateway, you will need [a link to] a WAIS distribution at the same level as the WWW directory.ads the web... Tim Berners-Lee WorldWideWeb project CERN, 1211 Geneva 23, Switzerland **************** From: gopher_at_gdunix.gd.chalmers.se (A Gopher user) Subject: WWW (World Wide Web) FAQ Xref: omega comp.infosystems.www:2197 alt.hypertext:2872 alt.answers:1001 comp.answers:2261 news.answers:12835 Path: omega!my!lunic!eru.mt.luth.se!kth.se!sunic!pipex!uunet!elroy.jpl.nasa.gov!decwrl!waikato!comp.vuw.ac.nz!kauri.vuw.ac.nz!gnat From: gnat_at_kauri.vuw.ac.nz (Nathan Torkington) Newsgroups: comp.infosystems.www,alt.hypertext,alt.answers,comp.answers,news.answers Subject: WWW (World Wide Web) FAQ Message-ID: <www-faq_750596406_at_kauri.vuw.ac.nz> Date: 14 Oct 93 11:00:08 GMT Reply-To: Nathan.Torkington_at_vuw.ac.nz Followup-To: comp.infosystems.www Organization: Dept. of Comp. Sci., Victoria Uni. of Wellington, New Zealand. Lines: 284 Approved: news-answers-request_at_MIT.Edu Supersedes: <www-faq_749390404_at_kauri.vuw.ac.nz> NNTP-Posting-Host: kauri.vuw.ac.nz Originator: gnat_at_kauri.vuw.ac.nz Archive-name: www/faq Maintained-by: Nathan.Torkington_at_vuw.ac.nz (Nathan Torkington) Contents ******** o 1. Recent changes to the FAQ o 2. Information about this document o 3. What are WWW, hypertext and hypermedia? o 4. What is a URL? o 5. How can I access the web? o 5.1 Browsers accessable by telnet o 5.2 Obtaining browsers o 6. How can I provide information to the web? o 7. How does WWW compare to gopher and WAIS? o 8. What is on the web? o 9. I want to know more. o Z. Credits 1. Recent changes to the FAQ **************************** These are most recent changes. o html-mode.el mentioned o disclaimer for crappy formatting 2. Information about this document ********************************** This is an introduction to the World-Wide Web project, describing the concepts, software and access methods. It is aimed at people who know a little about navigating the Internet, but want to know more about WWW specifically. If you don't think you are up to this level, try an introductory Internet book such as Ed Krol's "The Whole Internet". This informational document is posted to news.answers, comp.infosystems.gopher, comp.infosystems.wais and alt.hypertext on the 1st and 15th of every month (please allow a day or two for it to propagate to your site). The latest version is always available on the web as http://www.vuw.ac.nz:80/non-local/gnat/www-faq.html (see the section titled "What is a URL?" to understand what this means). The most recently posted version of this document is kept on the news.answers archive on rtfm.mit.edu in /pub/usenet/news.answers/www-faq (the URL for this is file://rtfm.mit.edu/pub/usenet/news.answers/www-faq). For information on FTP, send e-mail to mail-server_at_rtfm.mit.edu with "send usenet/news.answers/finding-sources" in the body, instead of asking me. Nathan Torkington maintains this document. Feedback about it is to be sent via e-mail to Nathan.Torkington_at_vuw.ac.nz In all cases, regard this document as out of date. Definitive information should be on the web, and static versions such as this should be considered unreliable at best. Please excuse any formatting inconsistencies in the posted version of this document, as it is automatically generated from the on-line version. 3. What are WWW, hypertext and ****************************** hypermedia? *********** WWW stands for the "World Wide Web". The WWW project, started and driven by CERN (the European Laboratory for Particle Physics), seeks to build a distributed hypermedia system. To access the web, you run a browser program. The browser reads documents, and can fetch documents from other sources. Information providers set up hypermedia servers which browsers can get documents from. The browsers can, in addition, access files by FTP, NNTP (the Internet news protocol), gopher and an ever-increasing range of other methods. On top of these, if the server has search capabilities, the browsers will permit searches of documents and databases. The documents that the browsers display are hypertext documents. Hypertext is text with pointers to other text. The browsers let you deal with the pointers in a transparent way -- select the pointer, and you are presented with the text that is pointed to. Hypermedia is a superset of hypertext -- it is any medium with pointers to other media. This means that browsers might not display a text file, but might display images or sound or animations. 4. What is a URL? ***************** URL stands for "Uniform Resource Locator". It is a draft standard for specifying an object on the Internet, such as a file or newsgroup. URLs look like this: o file://wuarchive.wustl.edu/mirrors/msdos/graphics/gifkit.zip o file://wuarchive.wustl.edu/mirrors o http://info.cern.ch:80/default.html o news:alt.hypertext o telnet://dra.com The first part of the URL, before the colon, specifies the access method. The part of the URL after the colon is interpreted specific to the access method. In general, two slashes after the colon indicate a machine name (machine:port is also valid). For more information, see 5. How can I access the web? **************************** You have two options -- either use a browser that can be telnetted to, or use a browser on your machine. 5.1 Browsers accessable by telnet ================================= An up-to-date list of these is available on the Web as http://info.cern.ch/hypertext/WWW/FAQ/Bootstrap.html and should be regarded as an authoritative list. info.cern.ch No password is required. This is in Switzerland, so continental US users might be better off using a closer browser. ukanaix.cc.ukans.edu A full screen browser "Lynx" which requires a vt100 terminal. Log in as www. www.njit.edu (or telnet 128.235.163.2) Log in as www. A full-screen browser in New Jersey Institute of Technology. USA. vms.huji.ac.il (IP address 128.139.4.3). A dual-language Hebrew/English database, with links to the rest of the world. The line mode browser, plus extra features. Log in as www. Hebrew University of Jerusalem, Israel. sun.uakom.cs Slovakia. Has a slow link, only use from nearby. info.funet.fi (or telnet 128.214.6.100) Not available when tested in O29-Oct-92. (FINLAND) 5.2 Obtaining browsers ====================== The preferred method of access of the Web is to run a browser yourself. Browsers are available for many platforms, both in source and executable forms. Here is a list generated from the authoritative list, http://info.cern.ch/hypertext/WWW/Clients.html ... Terminal based browsers Line Mode Browser This program gives W3 readership to anyone with a dumb terminal. A general purpose information retrieval tool. "Lynx" full screen browser This is a hypertext browser for vt100s using full screen, arrow keys, highlighting, etc. NJIT's Browser Assumes a character-grid terminal with cursor addressing, and provides a full-screen interface to the web. Tom Fine's perlWWW A tty-bbased browser written in perl. Graphic User Interfaces XMosaic Browser using X11/Motif. Works well. This is the most polished browser. Macintosh Browser Browser for the Macintosh. (Alpha.) "Cello" PC/Windows client Browser for windows. (Not yet released) "Erwise" Browser for X/Motif. (Unsupported). "ViolaWWW" Browser for X11 Browser for X11. (Beta, unsupported) tkWWW Browser Browser for X11. (Beta). MidasWWW Browser WWW browser for X/Motif. (Beta, works well.) Browser-Editor on the NeXT A browser/editor for NeXTStep. Allows wysiwyg hypertext editing. Requires NeXTStep 3.0 Unreleased Browser on CERNVM A full-screen browser for VM. Nonexistant. Use the line mode www. Dave Ragget's Browser Unreleased. For X11, (later PC?) 6. How can I provide information to *********************************** the web ******* Information providers run programs that the browsers can obtain hypertext from. These programs can either be WWW servers that understand the HyperText Transfer Protocol HTTP (best if you are creating your information database from scratch), "gateway" programs that convert an existing information format to hypertext, or a non-HTTP server that WWW browsers can access -- anonymous FTP or gopher, for example. If you only want to provide information to local users, placing your information in local files is also an option. This means that there would be no off-machine access. CERN's server is available for anonymous FTP from info.cern.ch and many other places. Use archie to search for "www" or "WWW" to find copies close to you. NCSA have their own server, for FTP from ftp.ncsa.uiuc.edu. See http://info.cern.ch/hypertext/WWW/Daemon/Overview.html for more information on writing gateways and for servers in general. To produce HTML, you can either use an SGML editor with the HTML DTD (URL is http://info.cern.ch/hypertext/WWW/MarkUp/DTDHeading.html), or use EMACS and html-mode.el (URL is ftp://ftp.ncsa.uiuc.edu/Web/elisp/html-mode.el). 7. How does WWW compare to ************************** gopher and WAIS? **************** While all three of these information presentation systems are client-server based, they differ in terms of their model of data. In gopher, data is either a menu, a document, an index or a telnet connection. In WAIS, everything is an index and everything that is returned from the index is a document. In WWW, everything is a (possibly) hypertext document which may be searchable. In practice, this means that WWW can represent the gopher (a menu is a list of links, a gopher document is a hypertext document without links, searches are the same, telnet sessions are the same) and WAIS (a WAIS index is a searchable page, returning a document with no links) data models as well as providing extra functionality. The principal difference between the three systems, it turns out, is deployment. WWW does not have as large a user base as gopher, mainly because of the small number of WWW browsers that are out. This is changing as WWW reaches critical mass (usage of the server at CERN doubles every 4 months -- twice the rate of Internet expansion). 8. What is on the web? ********************** Currently accessable through the web: o anything served through gopher o anything served through WAIS o anything on an FTP site o anything on Usenet o anything accessable through telnet o anything in hytelnet o anything in hyper-g o anything in techinfo o anything in texinfo o anything in the form of man pages o sundry hypertext documents One of the few limitations of the current networked information systems is that there is no simple way to find out what has changed, what is new, or even what is out there. As a result, a definitive list of the web's contents is impossible at this moment. 9. I want to know more ********************** To find out more, use the web. Credits ******* o Nathan Torkington o marca_at_ncsa.uiuc.edu o Tony Johnson -- Marek Wojcik <wojcik_at_dfki.uni-sb.de>
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