1SESSREG(1)                  General Commands Manual                 SESSREG(1)
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NAME

6       sessreg - manage utmp (5)/wtmp (5) entries for non-init clients
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SYNOPSIS

9       sessreg  [-w  wtmp  (5)-file]  [-u utmp (5)-file] [-L lastlog-file] [-l
10       line-name] [-h host-name] [-s slot-number] [-x Xservers-file] [-t ttys-
11       file] [-V] [-a] [-d] user-name
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DESCRIPTION

14       Sessreg  is a simple program for managing utmp (5)/wtmp (5) and lastlog
15       entries for xdm sessions.
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17       System V has a better interface to utmp than BSD; it dynamically  allo‐
18       cates  entries  in the file, instead of writing them at fixed positions
19       indexed by position in /etc/ttys.
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21       To manage BSD-style utmp files, sessreg has two  strategies.   In  con‐
22       junction  with  xdm,  the  -x  option  counts  the  number  of lines in
23       /etc/ttys and then adds to that the number of the line in the  Xservers
24       file  which  specifies the display.  The display name must be specified
25       as the "line-name" using the -l option.  This sum is used as the "slot-
26       number"  in  the  utmp file that this entry will be written at.  In the
27       more general case, the -s option specifies  the  slot-number  directly.
28       If for some strange reason your system uses a file other than /etc/ttys
29       to manage init, the -t option can direct sessreg to look elsewhere  for
30       a count of terminal sessions.
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32       Conversely,  System  V managers will not ever need to use these options
33       (-x, -s and -t).  To make the program easier to document  and  explain,
34       sessreg  accepts the BSD-specific flags in the System V environment and
35       ignores them.
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37       BSD and Linux also have a  host-name  field  in  the  utmp  file  which
38       doesn't exist in System V.  This option is also ignored by the System V
39       version of sessreg.
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41       This version of sessreg is built using the modern POSIX  pututxline(3c)
42       interfaces,  which  no  longer  require  the slot-number, ttys-file, or
43       Xservers-file mappings.  For  compatibility  with  older  versions  and
44       other  operating  systems,  the  -s, -t, and -x flags are accepted, but
45       ignored.
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USAGE

48       In Xstartup, place a call like:
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50              sessreg -a -l $DISPLAY -x /etc/X11/xdm/Xservers $USER
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52       and in Xreset:
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54              sessreg -d -l $DISPLAY -x /etc/X11/xdm/Xservers $USER
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OPTIONS

57       -w wtmp (5)-file
58              This  specifies  an  alternate  wtmp  (5)   file,   instead   of
59              /var/log/wtmp.  The special name "none" disables writing records
60              to the wtmp (5) file.
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62       -u utmp (5)-file
63              This  specifies  an  alternate  utmp  (5)   file,   instead   of
64              /var/run/utmp.  The special name "none" disables writing records
65              to the utmp (5) file.
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67       -L lastlog-file
68              This  specifies  an   alternate   lastlog   file,   instead   of
69              /var/log/lastlog,  if  the platform supports lastlog files.  The
70              special name "none" disables  writing  records  to  the  lastlog
71              file.
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73       -l line-name
74              This  describes the "line" name of the entry.  For terminal ses‐
75              sions, this is the final pathname segment of the terminal device
76              filename  (e.g.  ttyd0).   For X sessions, it should probably be
77              the local display name given to the users session (e.g. :0).  If
78              none  is  specified,  the  terminal name will be determined with
79              ttyname(3) and stripped of leading components.
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81       -h host-name
82              This is set to indicate that the session was  initiated  from  a
83              remote host.  In typical xdm usage, this options is not used.
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85       -s slot-number
86              Each  potential session has a unique slot number in BSD systems,
87              most are identified by the position  of  the  line-name  in  the
88              /etc/ttysfile.   This  option  overrides  the  default  position
89              determined with ttyslot(3).  This option  is  inappropriate  for
90              use  with  xdm,  the  -x  option is more useful.  This option is
91              accepted for compatibility, but does nothing in this version  of
92              sessreg.
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94       -x Xservers-file
95              As  X  sessions are one-per-display, and each display is entered
96              in this file, this options sets the slot-number to be the number
97              of lines in the ttys-file plus the index into this file that the
98              line-name is found.  This option is accepted for  compatibility,
99              but does nothing in this version of sessreg.
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101       -t ttys-file
102              This specifies an alternate file which the -x option will use to
103              count the number of terminal sessions on a host.  This option is
104              accepted  for compatibility, but does nothing in this version of
105              sessreg.
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107       -V     This option causes the command to print its version and exit.
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109       -a     This session should be added to utmp/wtmp.
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111       -d     This session should be deleted from  utmp/wtmp.   One  of  -a/-d
112              must be specified.
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SEE ALSO

115       xdm(1), utmp(5), wtmp(5)
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AUTHOR

118       Keith Packard, MIT X Consortium
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122X Version 11                     sessreg 1.1.0                      SESSREG(1)
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