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SESSREG(1)                                                          SESSREG(1)




NAME

       sessreg - manage __utmp_manpage__/__wtmp_manpage__ entries for non-init
       clients


SYNOPSIS

       sessreg [-w __wtmp_manpage__-file] [-u __utmp_manpage__-file] [-L last-
       log-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_manpage__/__wtmp_man-
       page__ and lastlog entries for xdm sessions.

       System  V has a better interface to utmp than BSD; it dynamically allo-
       cates 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 con-
       junction 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.

       This  version of sessreg is built using the modern POSIX pututxline(3c)
       interfaces, which no longer  require  the  slot-number,  ttys-file,  or
       Xservers-file  mappings.   For  compatibility  with  older versions and
       other operating systems, the -s, -t, and -x  flags  are  accepted,  but
       ignored.


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

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

       -L lastlog-file
              This  specifies  an  alternate  lastlog file, instead of __last-
              log_file__, 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 ses-
              sions, 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 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.  This option is
              accepted for compatibility, but does nothing in this version  of
              sessreg.

       -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.  This option is accepted for  compatibility,
              but does nothing in this version of sessreg.

       -t ttys-file
              This specifies an alternate file which the -x option will use to
              count the number of terminal sessions on a host.  This option is
              accepted  for compatibility, but does nothing in this version of
              sessreg.

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

       -a     This session should  be  added  to  __utmp_manpage__/__wtmp_man-
              page__.

       -d     This session should be deleted from __utmp_manpage__/__wtmp_man-
              page__.  One of -a/-d must be specified.


SEE ALSO

       xdm(1), __utmp_manpage__(5), __wtmp_manpage__(5)


AUTHOR

       Keith Packard, MIT X Consortium



                                 X Version 11                       SESSREG(1)