SESSREG(1)						      General Commands Manual							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 posi-
       tions 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  gen-
       eral  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  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 /usr/X11R6/lib/xdm/Xservers $USER

       and in Xreset:

	      sessreg -d -l $DISPLAY -x /usr/X11R6/lib/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 file-
	      name (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 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)

AUTHOR

       Keith Packard, MIT X Consortium

X Version 11							    Release 6.6 							SESSREG(1)