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Absolute FreeBSD, 2nd Edition by Michael W. Lucas

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Logging with syslogd

The FreeBSD logging system is terribly useful. Any Unix-like operating system allows you to log almost anything at almost any level of detail. While you'll find default system logging hooks for the most common system resources, you can choose a logging configuration that meets your needs. Almost all programs integrate with the logging daemon, syslogd(8).

The syslog protocol works through messages. Programs send individual messages, which the syslog daemon syslogd(8) catches and processes. syslogd(8) handles each message according to its facility and priority level, both of which client programs assign to messages. You must understand both facilities and levels to manage system logs.

Facilities

A facility is a tag indicating the ...

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