NAME

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

SYNOPSIS

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

DESCRIPTION

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

       System V has a better interface to 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 the utmp
       file  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  than  /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 and Linux also have 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.

USAGE

       In Xstartup, place a call like:

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

       and in Xreset:

              sessreg -d -l $DISPLAY -x /etc/X11/xdm/Xservers $USER

OPTIONS

       -w wtmp-file
              This  specifies an alternate wtmp file, instead of /var/log/wtmp.  The special name
              "none" disables writing records to the wtmp file.

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

       -L lastlog-file
              This  specifies  an  alternate  lastlog  file,  instead of /var/log/lastlog, if the
              platform supports lastlog files.  The special name "none" disables writing  records
              to the lastlog file.

       -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/ttysfile.  This option overrides 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.

       -V     This option causes the command to print its version and exit.

       -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), utmpx(5)

AUTHOR

       Keith Packard, MIT X Consortium