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OpenSolaris 2009.06 - man page for talk (opensolaris section 1)

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talk(1) 				  User Commands 				  talk(1)

       talk - talk to another user

       talk address [terminal]

       The talk utility is a two-way, screen-oriented communication program.

       When first invoked, talk sends a message similar to:

	 Message from TalkDaemon@ her_machine at time ...
	 talk: connection requested by your_address
	 talk: respond with: talk your_address

       to the specified address. At this point, the recipient of the message can reply by typing:

	 talk your_address

       Once  communication  is	established,  the two parties can type simultaneously, with their
       output displayed in separate regions of the screen. Characters are processed as follows:

	   o	  Typing the alert character will alert the recipient's terminal.

	   o	  Typing Control-L will cause the sender's screen regions to be refreshed.

	   o	  Typing the erase and kill characters will affect the sender's terminal  in  the
		  manner described by the termios(3C) interface.

	   o	  Typing  the  interrupt or end-of-file (EOF) characters will terminate the local
		  talk utility. Once the talk session has been terminated on one side, the  other
		  side of the talk session will be notified that the talk session has been termi-
		  nated and will be able to do nothing except exit.

	   o	  Typing characters from LC_CTYPE classifications print or space will cause those
		  characters to be sent to the recipient's terminal.

	   o	  When	and  only  when the stty iexten local mode is enabled, additional special
		  control characters and multi-byte or single-byte characters  are  processed  as
		  printable characters if their wide character equivalents are printable.

	   o	  Typing  other  non-printable	characters  will  cause them to be written to the
		  recipient's terminal as follows: control characters will appear as a caret  (^)
		  followed by the appropriate ASCII character, and characters with the high-order
		  bit set will appear in "meta" notation. For example,	`\003'	is  displayed  as
		  `^C' and `\372' as `M-z'.

       Permission  to  be  a  recipient  of a talk message can be denied or granted by use of the
       mesg(1) utility. However, a user's privilege may further constrain the domain of  accessi-
       bility  of  other  users' terminals. Certain commands, such as pr(1), disallow messages in
       order to prevent interference with their output. talk will fail when the  user  lacks  the
       appropriate privileges to perform the requested action.

       Certain	block-mode  terminals  do  not have all the capabilities necessary to support the
       simultaneous exchange of messages required for talk. When this type of exchange cannot  be
       supported  on such terminals, the implementation may support an exchange with reduced lev-
       els of simultaneous interaction or it may report an error describing the  terminal-related

       The following operands are supported:

       address	   The	recipient  of  the  talk session. One form of address is the username, as
		   returned by the who(1) utility. If you wish to talk to  someone  on	your  own
		   machine, then username is just the person's login name. If you wish to talk to
		   a user on another host, then username is one of the following forms:


		   although user@host is perhaps preferred.

       terminal    If the recipient is logged in more than once, terminal can be used to indicate
		   the	appropriate terminal name. If terminal is not specified, the talk message
		   will be displayed on one or more accessible terminals in use by the recipient.
		   The format of terminal will be the same as that returned by	who.

       See  environ(5)	for  descriptions  of the following environment variables that affect the
       execution of talk: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH.

       TERM    Determine the name of the invoker's terminal type.  If this variable is	unset  or
	       null, an unspecified terminal type will be used.

       The following exit values are returned:

       0     Successful completion.

       >0    An error occurred, or talk was invoked on a terminal incapable of supporting it.

       /etc/hosts	 host name database

       /var/adm/utmpx	 user and accounting information for talk

       See attributes(5) for descriptions of the following attributes:

       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       |Availability		     |SUNWrcmds 		   |
       |Interface Stability	     |Standard			   |

       mail(1),  mesg(1),  pr(1),  stty(1),  who(1),  write(1), termios(3C), attributes(5), envi-
       ron(5), standards(5)

       Typing Control-L redraws the screen, while the erase, kill, and word kill characters  will
       work  in  talk as normal. To exit, type an interrupt character. talk then moves the cursor
       to the bottom of the screen and restores the terminal to its previous state.

SunOS 5.11				    6 Nov 2000					  talk(1)
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