'\" te
.\" Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.
.\" Copyright 1989 AT&T
.TH utmpd 1M "4 Jun 2008" "SunOS 5.11" "System Administration Commands"
.SH NAME
utmpd \- utmpx monitoring daemon
.SH SYNOPSIS
.LP
.nf
\fButmpd\fR [\fB-debug\fR]
.fi

.SH DESCRIPTION
.sp
.LP
The \fButmpd\fR daemon monitors the \fB/var/adm/utmpx\fR file. See \fButmpx\fR(4) (and \fButmp\fR(4) for historical information).
.sp
.LP
\fButmpd\fR receives requests from \fBpututxline\fR(3C) by way of a named pipe. It maintains a table of processes and uses \fBpoll\fR(2) on \fB/proc\fR files to detect process termination. When \fButmpd\fR detects that a process has terminated, it checks that the process has removed its \fButmpx\fR entry from \fB/var/adm/utmpx\fR. If the process' \fButmpx\fR entry has not been removed, \fButmpd\fR removes the entry. By periodically scanning the \fB/var/adm/utmpx\fR file, \fButmpd\fR also monitors processes that are not in its table.
.SH OPTIONS
.sp
.ne 2
.mk
.na
\fB\fB-debug\fR\fR
.ad
.sp .6
.RS 4n
Run in debug mode, leaving the process connected to the controlling terminal. Write debugging information to standard output.
.RE

.SH EXIT STATUS
.sp
.LP
The following exit values are returned:
.sp
.ne 2
.mk
.na
\fB\fB0\fR\fR
.ad
.sp .6
.RS 4n
Successful completion.
.RE

.sp
.ne 2
.mk
.na
\fB\fB>0\fR\fR
.ad
.sp .6
.RS 4n
An error occurred.
.RE

.SH FILES
.sp
.ne 2
.mk
.na
\fB\fB/etc/default/utmpd\fR\fR
.ad
.sp .6
.RS 4n
You can set default values for the flags listed below. For example: \fBSCAN_PERIOD=600\fR
.sp
.ne 2
.mk
.na
\fB\fBSCAN_PERIOD\fR\fR
.ad
.sp .6
.RS 4n
The number of seconds that \fButmpd\fR sleeps between checks of \fB/proc\fR to see if monitored processes are still alive. The default is 300.
.RE

.sp
.ne 2
.mk
.na
\fB\fBMAX_FDS\fR\fR
.ad
.sp .6
.RS 4n
The maximum number of processes that \fButmpd\fR attempts to monitor. The default value is 4096.
.RE

.sp
.ne 2
.mk
.na
\fB\fBWTMPX_UPDATE_FREQ\fR\fR
.ad
.sp .6
.RS 4n
The number of seconds that \fButmpd\fR sleeps between read accesses of the \fBwtmpx\fR file. The \fBwtmpx\fR file's last access time is used by \fBinit\fR(1M) on reboot to determine when the operating system became unavailable. The default is 60.
.RE

.RE

.sp
.ne 2
.mk
.na
\fB\fB/var/adm/utmpx\fR\fR
.ad
.sp .6
.RS 4n
File containing user and accounting information for commands such as \fBwho\fR(1), \fBwrite\fR(1), and \fBlogin\fR(1).
.RE

.sp
.ne 2
.mk
.na
\fB\fB/proc\fR\fR
.ad
.sp .6
.RS 4n
Directory containing files for processes whose \fButmpx\fR entries are being monitored.
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Availabilitysystem/core-os
.TE

.SH SEE ALSO
.sp
.LP
\fBsvcs\fR(1), \fBinit\fR(1M), \fBsvcadm\fR(1M), \fBpoll\fR(2), \fBpututxline\fR(3C), \fBproc\fR(4), \fButmp\fR(4), \fButmpx\fR(4), \fBattributes\fR(5), \fBsmf\fR(5)
.SH NOTES
.sp
.LP
If the filesystem holding \fB/var/adm/wtmpx\fR is mounted with options which inhibit or defer access time updates, an unknown amount of error will be introduced into the \fButmp\fR \fBDOWN_TIME\fR record's timestamp in the event of an uncontrolled shutdown (for example, a crash or loss of power ). Controlled shutdowns will update the modify time of \fB/var/adm/wtmpx\fR, which will be used on the next boot to determine when the previous shutdown ocurred, regardless of access time deferral or inhibition.
.sp
.LP
The \fButmpd\fR service is managed by the service management facility, \fBsmf\fR(5), under the service identifier:
.sp
.in +2
.nf
svc:/system/utmp:default
.fi
.in -2
.sp

.sp
.LP
Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed using \fBsvcadm\fR(1M). The service's status can be queried using the \fBsvcs\fR(1) command.