comsat man page on Ultrix

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comsat(8c)							    comsat(8c)

Name
       comsat - biff server

Syntax
       /etc/comsat

Description
       The  command  is	 the server process which receives reports of incoming
       mail and notifies users if they have requested this service.  The  com‐
       mand  is	 invoked by when it detects an incoming packet on the datagram
       port associated with the ``biff'' service specification.	  For  further
       information, see The command reads the packet, which is a one line mes‐
       sage of the form:

       user@mailbox-offset

       If the user specified is logged in to the  system  and  the  associated
       terminal	 has  the  owner  execute bit turned on (by a ``biff y''), the
       offset is used as a seek offset into the appropriate mailbox  file  and
       the  first  7 lines or 560 characters of the message are printed on the
       user's terminal.	 Lines which appear to be part of the  message	header
       other than the From:, To:, Date:, or Subject: lines are not included in
       the displayed message.

Restrictions
       The message header filtering is prone to error.

Files
       Information about who is logged on to which terminals

See Also
       biff(1), inetd(8c)

								    comsat(8c)
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