TAILIEUCHUNG - Using the Inter net and Other Networks

This chapter introduces Unix networking: running programs on other computers, copying files between computers, browsing the World Wide Web, sending and receiving email messages, reading and posting messages to Usenet “Net news” discussions, and “chatting” interactively with other users on your local computer or worldwide. | In this chapter Remote Logins Windows from Other Computers Lynx a Text-based Web Browser Transferring Files Electronic Mail Usenet News Interactive Chat 6 Using the Internet and Other Networks A network lets computers communicate with each other sharing files email and much more. Unix systems have been networked for more than 25 years. This chapter introduces Unix networking running programs on other computers copying files between computers browsing the World Wide Web sending and receiving email messages reading and posting messages to Usenet Net news discussions and chatting interactively with other users on your local computer or worldwide. Remote Logins The computer you log in to may not be the computer you need to use. For instance you might have a workstation on your desk but need to do some work on the main computer in another building. Or you might be a professor doing research with a computer at another university. Your Unix system can connect to another computer to let you work as if you were sitting at that computer. This section describes how to connect to another computer from a local terminal. If you need to use a graphical nonterminal program the section Windows from Other Computers next explains. To log into a remote computer using a terminal first log in to your local computer as explained in the section Logging in Nongraphically in Chapter 1 or in the section A. Ready to Run X with a Graphical Login in Chapter 2 . Then in a terminal or terminal window on your local computer start a program that connects to the remote computer. Some typical 97 7 January 2002 13 14 98 Chapter 6 Using the Internet and Other Networks programs for connecting over a computer network are telnet ssh secure shell rsh remote shell or rlogin remote login . Programs such as cu and tip connect through telephone lines using a modem. In any case when you log off the remote computer the remote login program quits and you get another shell prompt from your local computer. Figure .

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