SESSREG(1)          X Version 11 (Release 4)           SESSREG(1)



  NAME
       sessreg - manage utmp/wtmp entries for non-init clients


  SYNOPSIS
       sessreg [-w wtmp-file] [-u utmp-file] [-l line-name] [-h
       host-name] [-s slot-number] [-x Xservers-file] [-t ttys-
       file] [-a] [-d] user-name

  DESCRIPTION
       Sessreg is a simple program for managing utmp/wtmp entries
       for xdm sessions.

       System V has a better interface to /etc/utmp than BSD; it
       dynamically allocates entries in the file, instead of
       writing them at fixed positions indexed by position in
       /etc/ttys.

       To manage BSD-style utmp files, sessreg has two strategies.
       In conjunction with xdm, the -x option counts the number of
       lines in /etc/ttys and then adds to that the number of the
       line in the Xservers file which specifies the display.  The
       display name must be specified as the "line-name" using the
       -l option.  This sum is used as the "slot-number" in
       /etc/utmp that this entry will be written at.  In the more
       general case, the -s option specifies the slot-number
       directly.  If for some strange reason your system uses a
       file other that /etc/ttys to manage init, the -t option can
       direct sessreg to look elsewhere for a count of terminal
       sessions.

       Conversely, System V managers will not ever need to use
       these options (-x, -s and -t).  To make the program easier
       to document and explain, sessreg accepts the BSD-specific
       flags in the System V environment and ignores them.

       BSD also has a host-name field in the utmp file which
       doesn't exist in System V.  This option is also ignored by
       the System V version of sessreg.



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  USAGE
       In Xstartup, place a call like:

              sessreg -a -l $DISPLAY -x /usr/lib/X11/xdm/Xservers $USER

       and in Xreset:

              sessreg -a -l $DISPLAY -x /usr/lib/X11/xdm/Xservers $USER


  OPTIONS
       -w wtmp-file
            This specifies an alternate wtmp file, instead of
            /usr/adm/wtmp for BSD or /etc/wtmp for sysV.  The
            special name "none" disables writing records to
            /usr/adm/wtmp.

       -u utmp-file
            This specifies an alternate utmp file, instead of
            "/etc/utmp".  The special name "none" disables writing
            records to /etc/utmp.

       -l line-name
            This describes the "line" name of the entry.  For
            terminal sessions, this is the final pathname segment
            of the terminal device filename (e.g. ttyd0).  For X
            sessions, it should probably be the local display name
            given to the users session (e.g. :0).  If none is
            specified, the terminal name will be determined with
            ttyname(3) and stripped of leading components.

       -h host-name
            This is set for BSD hosts to indicate that the session
            was initiated from a remote host.  In typical xdm
            usage, this options is not used.

       -s slot-number
            Each potential session has a unique slot number in BSD
            systems, most are identified by the position of the
            line-name in the /etc/ttys file.  This option overrides


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            the default position determined with ttyslot(3).  This
            option is inappropriate for use with xdm, the -x option
            is more useful.

       -x Xservers-file
            As X sessions are one-per-display, and each display is
            entered in this file, this options sets the slot-number
            to be the number of lines in the ttys-file plus the
            index into this file that the line-name is found.

       -t ttys-file
            This specifies an alternate file which the -x option
            will use to count the number of terminal sessions on a
            host.

       -a   This session should be added to utmp/wtmp.

       -d   This session should be deleted from utmp/wtmp.  One of
            -a/-d must be specified.

  SEE ALSO
       xdm(1)

  COPYRIGHT
       Copyright 1988, Massachusetts Institute of Technology.
       See X(1) for a full statement of rights and permissions.

  AUTHOR
       Keith Packard, MIT X Consortium













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