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X11R7.4 - man page for sessreg (x11r4 section 1)

SESSREG(1)			     General Commands Manual			       SESSREG(1)

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

       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

       Sessreg is a simple program for managing utmp/wtmp 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 speci-
       fies 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.

       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

       -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 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  ses-
	      sions,  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  tty-
	      name(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.

       -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.


       Keith Packard, MIT X Consortium

X Version 11				  sessreg 1.0.4 			       SESSREG(1)

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