Fedora Linux

ftp	File-transfer-protocol daemon.
kern	Kernel messages.
local0, local1, local2, local3, local4, local5, local6, and local7	Reserved for custom use on a distribution-by-distribution or site-by-site basis. Fedora uses local7 to log boot messages.
lpr	Printing system.
mail	Electronic mail.
news	Net news (Usenet).
syslog	Messages from syslogd itself.
user	User-level messages.
uucp	Unix-to-Unix copy messages (rarely used).

The level consists of a priority level and can be any of the values listed in Table 8-4 , in increasing order of severity.

Table 8-4. Priority-level values, in order of severity

Value	Description
debug	Informational software debugging messages.
info	General informational messages.
notice	Important normal messages that do not indicate an error or problem.
warning	Information about an unusual or impending situation.
err	Error messages, indicating that something is wrong.
crit	Critical conditions indicating imminent danger.
alert	Serious, emergency problems.
emerg	Emergency situation: the system is in crisis and failing.

Specifying a level means any message of that level or higher (more severe), so the selector kern.crit would match messages from the kernel with a priority of crit , alert , or emerg . To match only crit , an equal sign is added: kern.=crit . An exclamation mark negates a match: kern.!crit matches kernel messages with a priority below crit , while kern.!=crit matches all kernel messages except those with a priority of crit .

An asterisk indicates that the facility or level should be ignored. Therefore, authpriv.* matches messages from the authpriv facility regardless of the priority, and *.info matches messages from any facility which are at the info level or higher. Multiple facilities or priorities can be matched using commas (indicating an OR operation), so mail,local3.* matches any message from the mail or local3 facilities.

Multiple selectors may be included in one entry, separated by semicolons, which indicates an AND operation. The special priority none matches no messages from the specified facility. Therefore *.crit;kern.none matches all messages that are of crit priority or higher, unless they come from the kernel.

On the right side of each entry in /etc/syslog.conf is a destination for the messages. The destination may be:

An absolute pathname

Messages are placed in the specified file. The pathname may also point to a named pipe, providing a method for passing messages to another program, or to a device such as a terminal (such as /dev/tty3 ) or a printer ( /dev/lp0 ). Adding a hyphen in front