LAN Ethernet l Ethernets Xerox PARC LAN 4
- Slides: 31
LAN: Ethernet l Ethernets § Xerox PARC에서 개발된 가장 일반적인 LAN 구현 4
인터넷 l 인터넷 주소 § 인터넷 상의 각 컴퓨터는 자신의 IP 주소를 갖는다. § 도메인 이름 vs IP 주소 l cs. sookmyung. ac. kr 203. 252. 201. 11 cs 2. sookmyung. ac. kr 203. 153. 147. 6 Domain Name System(DNS) § a hierarchical naming system for computers on Internet § translate hostnames into IP addresses l nslookup § hostname IP address § %nslookup cs. sookmyung. ac. kr 11
사용자 l 사용자 리스트 users rusers -a {host}* § display a list of users on your local host/ network § 사용자 리스트 l 개인 정보 who [am i] rwho § display a list of every user on local host. finger {user. Id}* § display information about a list of users including on a remote host 12
통신 l 한 번에 한 줄씩 보내기 write user. Id [tty] copy its standard input, one line at a time, to the terminal associate with user. Id l 대화 talk user. Id [tty] talk to a user on the Internet via a split-screen interface. l 모두에게 메시지 wall [ file. Name ] copy its standard input to the terminals of every user on the local host 13
자료 분산 l 파일 복사 ftp -n [ host. Name ] manipulate files and directories on both your local host and a remote host l ftp cs. sookmyung. ac. kr Connected. . Name. . Password … ftp> 14
원격 연결 l 원격 로그인 § rlogin -ec [-l user. Id] host. Name login into the remost host. Name § telnet [host [port] ] establishes a two-way connection with a remote port. 16
원격 연결 l 원격 명령어 실행 rsh [-l user. Id] hostname [command] § remote execution create a remote shell on the host. Name to execute command § access control list hostnames in ~/. rhosts of the remote host 17
ssh server / client 19
Web browsers l Netscape Navigator § Mosaic web browser 기반의 최초의 상용 Web browser l Firefox § http: //www. mozilla. or. kr/ko/firefox l Google chrome § http: //www. google. com/chrome l Safari § http: //www. apple. com/safari/ 21
X-윈도우 동작과정 X applications Display X-window Monitor X server X client Mouse Keyboard X client 24
X 응용(Applications) l X 응용이란 ? § X-윈도우 상에서 수행될 수 있는 응용 프로그램 § xterm, hanterm, xcalc, xfig, ghostview, xfm, … l 어디에 있나 ? § /usr/X 11 R 6/bin on Linux § /usr/openwin/bin on Solaris 27
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