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help with vpn
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talk(1) General Commands Manual talk(1) Name talk, otalk - talk to another user Syntax talk person [ttyname] otalk person [ttyname] Description The command is a visual communication program which copies lines from your terminal to that of another user. If you wish to talk to someone on your own machine, then person is just the person's login name. If you wish to talk to a user on another host, then person is of the form : host!user or host.user or host:user or user@host The form user@host is perhaps preferred. If you want to talk to a user who is logged in more than once, the ttyname argument may be used to indicate the appropriate terminal name. When first called, it sends the message Message from TalkDaemon@his_machine... talk: connection requested by your_name@your_machine. talk: respond with: talk your_name@your_machine to the user you wish to talk to. At this point, the recipient of the message should reply by typing talk your_name@your_machine It doesn't matter from which machine the recipient replies, as long as his login-name is the same. Once communication is established, the two parties may type simultaneously, with their output appearing in separate windows. Typing Ctrl-L will cause the screen to be reprinted, while your erase, kill, and word kill characters will work in talk as normal. To exit, just type your interrupt character; then moves the cursor to the bottom of the screen and restores the terminal. Permission to talk may be denied or granted by use of the mesg command. At the outset talking is allowed. Certain commands, in particular and disallow messages in order to prevent messy output. In order to use the program with machines on your network that may be running earlier versions of ULTRIX, you must initiate a session with the command (/usr/ucb/otalk) instead of the command You must also respond to a request from a machine running an older version of the pro- gram with the command. See the Restrictions section. Examples The following example demonstrates how to use the command. In this case, user1, whose system (system1) is running ULTRIX V2.2 initiates a session with user2, whose system (system2) is running ULTRIX V3.0. User1 types the following: system1> talk user2@system2 The following message appears on the screen of user2: Message from Talk_Daemon@system2 at 12:37 ... talk: connection requested by user1@system1. talk: respond with: otalk user1@system1 To establish the connection user2 follows the instructions from the Talk_Daemon and types the following at the system prompt: system2> otalk user1@system1 Restrictions The version of released with ULTRIX V3.0 uses a protocol that is incompatible with the protocol used in earlier versions. Starting with ULTRIX V3.0, the program communicates with other machines running ULTRIX, V3.0 (and later), and machines running 4.3 BSD or versions of UNIX based on 4.3 BSD. The command is not 8-bit clean. Typing in DEC Multinational Characters (DECMCS) causes the characters to echo as a sequence of a carets (^) followed by the character represented with its high bit cleared. This limitation makes unusable if you want to communicate using a language which has DECMCS characters in its alphabet. Files to find the recipient's machine to find the recipient's tty See Also mail(1), mesg(1), who(1), write(1), talkd(8c) talk(1)
