cec man page on Plan9

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CEC(8)									CEC(8)

       cec - Coraid Ethernet Console

       cec  [  -dp  ] [ -S srv ] [ -c esc ] [ -e ea ] [ -h host [ -s shelf ] [
       interface ]

       Cec uses raw Ethernet packets to connect to a CEC  server  for  console
       access.	 All  clients  share  the same session.	 Coraid appliances and
       Coraid Plan 9 kernels can currently be CEC servers.

       Cec starts by probing the specified network interface for available CEC
       servers.	  The default is /net/ether0.  Only one cec process may be run
       per Ethernet interface.	If the server is specified with the -b, -h, or
       -s  options,  communication  will proceed immediately upon discovery of
       the first CEC server with the specified address.	 Otherwise,  a	selec‐
       tion prompt will be displayed showing the discovered CEC servers avail‐
       able for communication.	Unless the -p option is specified,  cec	 exits
       if no matching servers are found.  The selection prompt accepts

       number Connect to server number (from the first column),

       p      Probe the interface again, and

       q      Quit.

       Note  the  selection number is not the shelf address but the cec-gener‐
       ated sequence number printed in the leftmost column.

       Once connected to a CEC server, typing the escape character  will  drop
       the user into an escape prompt where the user may type to quit the con‐
       nection, to send the escape character across the connection, or to con‐
       tinue the connection.

       -c     Set the escape character to control-esc.	The default setting is

       -d     Print debugging information.

       -e     Connect to the server with Ethernet address ea; implies -p.

       -h     Connect to the server host.  Note that this name	might  not  be
	      the same as the contents of on the target system.

       -p     Persist:	continue trying to connect even if there are no match‐
	      ing servers.  This is useful when connecting  to	a  CPU	server
	      before it boots.

       -s     Connect to the server at address shelf.

       -S     Post the CEC connection as /srv/srv to allow sharing.

       If  the -e, -s, or -h options are given, cec will exit upon closing the
       connection.  Otherwise, cec will return to the  selection  prompt  upon
       connection close.

	      ; cec '#l1/ether1'
	       0       1 003048679b89
	      [#qp]: 0

	      SR shelf 1>
	      SR shelf 1> >>> q
	       0       1 003048679b89
	      [#qp]: q


       The  CEC	 protocol  should  be integrated with the console server.  The
       arbitration between the keyboard and network is suboptimal.

       Early boot information and very late crash information from servers may
       be lost due to timing quirks.

                             _         _         _ 
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                         \ \| |/ / \ \| |/ / \ \| |/ /  
                          \ \ / /   \ \ / /   \ \ / /   
                           \   /     \   /     \   /    
                            \_/       \_/       \_/ 
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