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149 lines
4.4 KiB
Groff
149 lines
4.4 KiB
Groff
.\" Copyright (c) 1983, 1986, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)syslogd.8 8.1 (Berkeley) 6/6/93
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.\" $Id: syslogd.8,v 1.9 1997/04/26 00:00:32 pst Exp $
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.\"
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.Dd October 12, 1995
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.Dt SYSLOGD 8
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.Os BSD 4.2
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.Sh NAME
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.Nm syslogd
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.Nd log systems messages
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.Sh SYNOPSIS
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.Nm
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.Op Fl \&dI
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.Op Fl f Ar config_file
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.Op Fl m Ar mark_interval
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.Op Fl p Ar log_socket
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.Sh DESCRIPTION
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The
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.Nm
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daemon reads and logs messages to the system console, log files, other
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machines and/or users as specified by its configuration file.
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The options are as follows:
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.Bl -tag -width Ds
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.It Fl d
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Put
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.Nm
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into debugging mode. This is probably only of use to developers working on
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.Nm Ns .
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.It Fl f
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Specify the pathname of an alternate configuration file;
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the default is
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.Pa /etc/syslog.conf .
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.It Fl s
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Operate in secure mode. Do not listen for log message from remote machines.
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.It Fl m
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Select the number of minutes between
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.Dq mark
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messages; the default is 20 minutes.
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.It Fl p
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Specify the pathname of an alternate log socket;
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the default is
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.Pa /var/run/log .
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.El
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.Pp
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The
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.Nm
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daemon reads its configuration file when it starts up and whenever it
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receives a hangup signal.
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For information on the format of the configuration file,
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see
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.Xr syslog.conf 5 .
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.Pp
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The
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.Nm
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daemon reads messages from the
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.Tn UNIX
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domain socket
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.Pa /var/run/log ,
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from an Internet domain socket specified in
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.Pa /etc/services ,
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and from the special device
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.Pa /dev/klog
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(to read kernel messages).
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.Pp
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The
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.Nm
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daemon creates the file
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.Pa /var/run/syslog.pid ,
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and stores its process
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id there.
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This can be used to kill or reconfigure
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.Nm Ns .
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.Pp
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The message sent to
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.Nm
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should consist of a single line.
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The message can contain a priority code, which should be a preceding
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decimal number in angle braces, for example,
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.Sq Aq 5.
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This priority code should map into the priorities defined in the
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include file
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.Aq Pa sys/syslog.h .
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.Sh FILES
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.Bl -tag -width /var/run/syslog.pid -compact
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.It Pa /etc/syslog.conf
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The configuration file.
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.It Pa /var/run/syslog.pid
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The process id of current
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.Nm Ns .
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.It Pa /var/run/log
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Name of the
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.Tn UNIX
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domain datagram log socket.
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.It Pa /dev/klog
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The kernel log device.
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.El
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.Sh SEE ALSO
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.Xr logger 1 ,
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.Xr syslog 3 ,
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.Xr services 5 ,
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.Xr syslog.conf 5
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Bx 4.3 .
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.Sh BUGS
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The ability to log messages received in UDP packets is equivalent to
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an unauthenticated remote disk-filling service, and should probably be
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disabled by default. Some sort of
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.No inter- Ns Nm syslogd
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authentication mechanism ought to be worked out.
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.Pp
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The log socket was moved from
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.Pa /dev
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to ease the use of a read-only root filesystem. This may confuse
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some old binaries so that a symbolic link might be used for a
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transitional period.
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