Man page of SYSLOG-NG
Section: Maintenance Commands (8)
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syslog-ng - logs system messages
NOTE: This file is not up to date. Please refer to the html documentation.
syslog-ng reads and logs messages to the system console, log files,
other machines and/or users as specified by its configuration file.
The configuration file is read at startup and is reread after receipt
of a hangup (HUP) signal. When reloading the configuration file, all
destination files are closed and reopened as appropriate. For more
information about the configuration file, see syslog-ng.conf(5).
Typically messages are sent to syslog-ng via a Unix domain socket
(/dev/log) or via UDP, to port 514 or to whatever syslog/udp
is defined to be in /etc/services. To receieve messages from the
kernel, /dev/klog is opened for reading.
Messages sent to syslog-ng should be an entire line, prefixed by a
priority code in between '<' and '>'. Definititions of the recognised
values can be found in the include file <sys/syslog.h>.
syslog-ng can be configured to pass messages on to other syslog-ng's
and when doing so, it sends the message on with the priority as a prefix.
It is not necessary to terminate a message with a line feed or carriage return.
- -C <directory>, --chroot=<directory>
Chroot to directory.
- -d, --debug
Set "debug mode". Prints out various messages to aid in debugging and stops
it from becoming a daemon. To activate debugging in the yacc parser, either
use this option twice or combine with -v.
- -F, --foreground
Don't fork into background.
- -f <filename>, --cfgfile=<filename>
Instead of reading the normal /etc/syslog-ng/syslog-ng.conf file for
configuration information, use the filename given instead.
- -g <group>, --group=<group>
Switch to group.
- -p <filename>, --pidfile=<filename>
Write the current PID information to the specified file.
Defaults to /var/run/syslog-ng.pid.
- -s, --syntax-only
Only read and parse the configuration file. See also the option -f.
- -u <user>, --group=<user>
Switch to user.
- -v, --verbose
Enable verbose mode. Process will not become a daemon. Prints out
fewer messages, compared to -d.
- -V, --version
Print the version number.
It is expected that syslog-ng will run as root, however, if not running
on a priviledged port of it it owned its own log directories, etc, it might
run as a non-root user.
Configuration file for
for more information.
The file containing the process id of
If you find any, please send email to the syslog-ng mailing list at email@example.com
- SEE ALSO
This document was created by
using the manual pages.
Time: 04:17:51 GMT, September 24, 2010