X Version 11 (Release 6.1)
manage utmp/wtmp entries for non-init clients
sessreg is a simple program for managing
utmp/wtmp entries for
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 that 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
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.
In Xstartup, place a call like:
sessreg -a -l $DISPLAY -x /usr/X11/lib/xdm/Xservers $USER
and in Xreset:
sessreg -d -l $DISPLAY -x /usr/X11/lib/xdm/Xservers $USER
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
This specifies an alternate utmp file, instead of
/etc/utmp. The special name none disables
writing records to /usr/adm/utmp.
This describes the ``linecw''" 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
and stripped of leading components.
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.
Each potential session has a unique slot number in BSD systems, most are
identified by the position of the line-name in the
This option overrides the default position determined with
This option is inappropriate for use with xdm, the
-x option is more useful.
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
This specifies an alternate file which the -x option will use to count
the number of terminal sessions on a host.
This session should be added to utmp/wtmp.
This session should be deleted from utmp/wtmp.
One of -a|-d must be specified.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004