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Plan 9 - man page for listen (plan9 section 8)

LISTEN(8)			     System Manager's Manual				LISTEN(8)

       listen,	dkcpu,	dkcpunote,  dkdiscard, dkecho, dkexportfs, dkrexexec, dkticket, dkwhoami,
       dksmtp, dkdcon, dklogin, dkguard, il7,  il9,  il565,  il566,  il17005,  il17006,  il17007,
       il17009,  tcp2,	tcp7,  tcp9,  tcp21, tcp23, tcp80, tcp25, tcp513, tcp515, tcp564, tcp565,
       tcp566, tcp17007, tcp6000 - listen for calls on a network device

       aux/listen [-q] [-d srvdir] [-t trustsrvdir] [name]]

       listen announces itself to a network as name (by default the contents of /env/sysname) and
       listens	for  inbound calls to local services.  Net is the network device on which to lis-
       ten, by default /net/dk.  The services available are executable files in srvdir or  trust-
       srvdir.	 If neither srvdir nor trustsrvdir is given, listen looks for executable files in
       /bin/service.  Services found in srvdir are executed  as  user  none;  services	found  in
       trustsrvdir  as executed as the user who started listen.  Option -q suppresses affirmative
       log information.

       Service names are made by concatenating the name of the network with the name of the  ser-
       vice  or port.  For example, an inbound call on the TCP network for port 565 executes ser-
       vice tcp565, while a call on the Datakit  network  for  service	whoami	executes  service

       The following services are available in /bin/service.

       dkcpu il17005
	      server for cpu(1) command.

       dkcpunote il17006
	      /proc/pid/notify forwarding for cpu(1).

       dkexportfs il17007 tcp17007
	      serve a piece of the name space using the Plan 9 file system protocol, with authen-
	      tication (typically used by cpu(1)).

       tcp564 like 17007, without authentication (used by Unix systems to see Plan 9 files).

       dkrexexec il17009
	      remote execution.

       dkwhoami il565 tcp565
	      report the address of the incoming call.

       tcp21  FTP daemon

       tcp80  HTTP daemon; see httpd(8).

       tcp515 LP daemon; see lp(8).

	      X-window callback

       dksmtp tcp25
	      mail delivery.

       dkdcon research Unix terminal connection.

	      generic terminal connection.

       tcp23  telnet terminal connection.

       tcp513 rlogin terminal connection.

       tcp2   hold the connection open; sleep for a long time

       dkecho il7 tcp7
	      echo any bytes received (bit mirror)

       dkdiscard il9 tcp9
	      consume any bytes received (bit bucket)

       The following services are available in /bin/service.auth.

       dkguard tcp566
	      check a SecureNet box.

       dkticket il566
	      authentication requests.

	      by convention, Datakit device bind point

	      by convention, IL device bind point

	      by convention, TCP device bind point

	      default announced name

       The source to listen is	in  /sys/src/cmd/aux/listen.c.	 The  other  commands  are  rc(1)
       scripts in /rc/bin/service.

       dkconfig(8), auth(6), dk(3), dial(2)


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