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Usage of Internet Applications

Usage of Internet Applications

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Usage of Internet Applications

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  1. Usage of Internet Applications March 10, 1998 Jung Sung-wuk SPARCS, KAIST allaplus@sparcs.kaist.ac.kr

  2. Telnet ARA BBS Telnet commands Telnet Servers FTP FTP Commands Anonymous FTP Advice on FTP News Group Examples Outlook Express WWW WWW Internet Address Web Compass Search Engine Brief Contents

  3. telnet • Definiton • Remote login • When do we use this? • BBS • Online Service • DB Search

  4. ARA BBS allaplus@gura.kaist.ac.kr4>telnet ara.kaist.ac.kr Trying 143.248.8.5... Connected to ara.kaist.ac.kr. Escape character is '^]'. SunOS UNIX (ara) login: bbs ::::: ::::/:::: //| ||\ ||\ ||\ ||\ // TM K.A.I.S.T ::SPA\RCS:: //_| ||/ ||_\ ||< ||< \\ --==##==-- ::::/:::: // | ||\ || \ ||/ ||/ // UNIVERSITY ::::: ----------------------------- Since 1991.12.7 *!* 아라의 세계에 오신 여러분을 환영합니다 *!* -=[아라비비]=-에 오신 것을 환영합니다. 사용자 명을 입력해 주세요(새로 오신 분은 'new', 그만두시려면 'off') 사용자명(UserId) : aplus27 비밀번호(Passwd) :

  5. Telnet Commands • o - open • cl - close • q - quit • CTRL - ]

  6. Telnet Servers • Telnet connection Servers • kids.kornet.nm.kr • ara, csqueen, ms, math1 • posb.postech.ac.kr • daidun, chiak, sparcs, adam, volt .... • Online Services • www service • http://libr0.kaist.ac.kr/~opac

  7. FTP commads • Connect • open and quit • Directory move and file search • cd and lcd • ls, dir • File Transfer • get, put • mget, mpu • set • bin, ascii

  8. Anonymous FTP • Everybody can access • Only need your E-mail address allaplus@gura.kaist.ac.kr17>ftp ftp.kaist.ac.kr Connected to cair-archive.kaist.ac.kr. 220 cair-archive FTP server (Version wu-2.4(7) 1997년 2월 11일 화요일 오후 01시 08분 27초) ready. Name (ftp.kaist.ac.kr:allaplus): anonymous 331 Guest login ok, send your complete e-mail address as password. Password:

  9. Anonymous FTP Servers • ftp.kaist.ac.kr • ftp.korenet.nm.kr • gura.kaist.ac.kr • cair.kaist.ac.kr • camis.kaist.ac.kr... ================================= command : cd /pub

  10. Advice on ftp • Select the nearest server • Check the local time • Change your directory in advance • Be careful when overwriting • Find README.txt • Background job. ftp -n hostname << EOF user login passwd cd directory_name get filename bye EOF

  11. news group example • Han.* • han.comp.lang.c • han.rec.sports.football • han.rec.humor • Others • comp.lang.java.programmer • alt.manga • alt.binaries.pictures.art • about 20,000 news groups

  12. WWW(World Wide Web) • Hypermedia and Hypertext • HTML • HTTP • History of WWW • Born in 1989 • Browser • Mosaic • Netscape Communicatoer • Internet Explorer

  13. Internet address • World class • org, com, edu, gov, mil, net • Country • kr, ca, jp, sk, etc. • In some countries ( incl. Korea ) • ac, co, go, nm, or, re, ... • Examples • www.kaist.ac.kr, www.chosun.com, www.w3.org, www.chollian.net

  14. Web Compass • Search Engine • Altavista - www.altavista.digital.com • Infoseek - www.infoseek.com • Directory Service • 심마니 - simmany.chollian.net • 네이버 - www.naver.com • Yahoo - www.yahoo.com

  15. Search Example • Altavista - www.altavista.digital.com • AND, “ • “chanho park” AND “Piazza” • OR • - • NEAR • “Michael Jackson” NEAR Korea • Naver - www.naver.com • Meta search engine