1*61421Sbostic.\" Copyright (c) 1983, 1991, 1993 2*61421Sbostic.\" The Regents of the University of California. All rights reserved. 318954Smckusick.\" 443764Strent.\" %sccs.include.redist.man% 518954Smckusick.\" 6*61421Sbostic.\" @(#)comsat.8 8.1 (Berkeley) 06/04/93 735554Sbostic.\" 847462Scael.Dd 947462Scael.Dt COMSAT 8 1047462Scael.Os BSD 4.2 1147462Scael.Sh NAME 1247462Scael.Nm comsat 1347462Scael.Nd biff server 1447462Scael.Sh SYNOPSIS 1547462Scael.Nm comsat 1647462Scael.Sh DESCRIPTION 1747462Scael.Nm Comsat 1828325Skarelsis the server process which receives reports of incoming mail 1918954Smckusickand notifies users if they have requested this service. 2047462Scael.Nm Comsat 2147462Scaelreceives messages on a datagram port associated with the 2247462Scael.Dq biff 2347462Scaelservice 2418954Smckusickspecification (see 2547462Scael.Xr services 5 2628325Skarelsand 2747462Scael.Xr inetd 8 ) . 2847462ScaelThe one line messages are of the form: 2947462Scael.Pp 3047462Scael.Dl user@mailbox-offset 3147462Scael.Pp 3218954SmckusickIf the 3347462Scael.Em user 3418954Smckusickspecified is logged in to the system and the associated terminal has 3547462Scaelthe owner execute bit turned on (by a 3647462Scael.Dq Li biff y ) , 3747462Scaelthe 3847462Scael.Em offset 3918954Smckusickis used as a seek offset into the appropriate mailbox file and 4018954Smckusickthe first 7 lines or 560 characters of the message are printed 4118954Smckusickon the user's terminal. Lines which appear to be part of 4247462Scaelthe message header other than the 4347462Scael.Dq From , 4447462Scael.Dq \&To , 4547462Scael.Dq Date , 4647462Scaelor 4747462Scael.Dq Subject 4847462Scaellines are not included in the displayed message. 4947462Scael.Sh FILES 5047462Scael.Bl -tag -width /var/run/utmp -compact 5147462Scael.It Pa /var/run/utmp 5247462Scaelto find out who's logged on and on what terminals 5347462Scael.El 5447462Scael.Sh SEE ALSO 5547462Scael.Xr biff 1 , 5647462Scael.Xr inetd 8 5747462Scael.Sh BUGS 5818954SmckusickThe message header filtering is prone to error. 5928325SkarelsThe density of the information presented is near the theoretical minimum. 6047462Scael.Pp 6118954SmckusickUsers should be notified of mail which arrives on other 6228325Skarelsmachines than the one to which they are currently logged in. 6347462Scael.Pp 6418954SmckusickThe notification should appear in a separate window so it 6518954Smckusickdoes not mess up the screen. 6647462Scael.Sh HISTORY 6747462ScaelThe 6847462Scael.Nm 6947462Scaelcommand appeared in 7047462Scael.Bx 4.2 . 71