|SESSREG(1)||General Commands Manual||SESSREG(1)|
sessreg - manage utmp/wtmp entries for non-init clients
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
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.
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
xdm(1), utmp(5), wtmp(5)
Keith Packard, MIT X Consortium
|sessreg 1.1.2||X Version 11|