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94 lines
2.1 KiB
Groff
94 lines
2.1 KiB
Groff
.\"
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.\" $Id: syslogd.8,v 1.1 1997/02/28 05:12:12 gdr Exp $
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.\"
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.TH SYSLOGD 8 "27 October 1993" GNO "System Administration"
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.SH NAME
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\fBsyslogd\fR \- log system messages
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.SH DESCRIPTION
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.LP
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.B syslogd
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is responsible for receiving system log messages and routing them to
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the apropriate file or terminal based on the type of message.
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.LP
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Messages are passed to
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.BR syslogd
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using
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.BR syslog (2).
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Each message has a
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.I facility
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and a
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.IR priority .
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The
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.IR facility
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identifies which part of the system issued the message. The
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.IR priority
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indicates the severity of the message. The codes for both can be found in
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the header file <sys/syslog.h>.
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.LP
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If
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.BR syslogd
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receives a message with priority
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.BR LOG_EMERG ,
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meaning the system is unusable, it will flag a panic.
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.BR init (8)
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will then take additional action, such as rebooting.
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.LP
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.B syslogd
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is automatically started by
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.BR init (8)
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and is restarted if it is killed. If
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.BR syslogd
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is killed and restarted, the port id will not change.
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.LP
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Killing
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.BR syslogd
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has the effect that the configuration file will be reread.
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.SH CONFIGURATION
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At startup,
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.BR syslogd
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reads the file
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.BR /etc/syslog.conf .
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The format of each line in this file is:
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.nf
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\fIfacility\fR.\fIpriority\fR \fIdestination\fR,...
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.fi
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where either or both of
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.I facility
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and
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.IR priority
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can be
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.BR * ,
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meaning any value.
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.IR destination
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is either the full pathname of a file where the message should be saved, or a
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user name to whom messages should be reported.
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.LP
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The default configuration is equivalent to the following syslog.conf
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file:
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.nf
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*.* /var/adm/syslog,root
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.fi
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.SH BUGS
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.BR syslog (2)
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must wait for the message it sends to be received by
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.BR syslogd
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before returning. Otherwise, the calling process might exit and the memory
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which contained the message would be disposed of if
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.BR syslogd
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had not yet transfered the memory's ownership to itself.
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.LP
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If a user is logged on multiple times, he or she will only receive
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syslog messages in the first location (in the order of
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.BR /etc/ttys ).
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.SH FILES
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.BR /etc/syslog.conf
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.SH "SEE ALSO"
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.LP
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.BR syslog (2),
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.BR init (8)
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.SH AUTHOR
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Phillip Vandry, <vandry@cam.org>
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