Writing to System Logs Post: 302750861

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Operating Systems Linux Red Hat Writing to System Logs Post 302750861 by thmnetwork on Wednesday 2nd of January 2013 04:26:38 PM

01-02-2013

Registered User

syslog generally keeps its destination files open:

Code:

[root@localhost log]# fuser maillog
maillog:              4648
[root@localhost log]# ps -efa | grep 4648
root      4648     1  0  2012 ?        00:00:01 syslogd -m 0
root     11294  9649  0 16:20 pts/0    00:00:00 grep 4648
[root@localhost log]#

Obviously two programs can't/shouldn't be writing to the same file. There are also syslog-specific reasons for not wanting to do it this way: What if I'm doing a remote syslog? If you're logging directly to files you don't get to take advantage of that and if you want to build that funtionality in yourself then your job is just that much harder. What if the sysadmin wants your logs to go to two different files? etc, etc.

These are the problems the syslog daemon was created to resolve: make a single program broker access to the logging system, then you can solve common problems in one place and in a way that doesn't lead to programs clobbering the work of others.

Most languages have syslog bindings anyways so there's very little reason to want to do it a different way.

thmnetwork

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LEARN ABOUT HPUX

pppoerd

pppoerd(1M)															       pppoerd(1M)

NAME

       pppoerd - PPPoE (Point to Point Protocol over Ethernet) relay

SYNOPSIS

       config-file] debug-level] log-file]

DESCRIPTION

       You need the daemon if the PPPoE client and the server are not on the same link.

   Options
       supports the following options:

	      Specify the configuration file with absolute path
				to be used by The default configuration file is

	      Specify the debug level at which logging has to be
				enabled.  The three debug levels are:

				Logs all error messages.
					      To log these messages, type on the command line.

				Logs all warning messages.
					      To log these messages, type on the command line.

				Logs function level debug messages.
					      To log these messages, type on the command line.

	      Specify the log file with absolute path, to which
				must log all messages. The default log file is

EXAMPLES

       An example usage of is as follows:

WARNINGS

       Note that, you cannot run the relay without file.  See pppoerd.conf(4) for more information.

AUTHOR

       was developed by Hewlett-Packard.

FILES

       PPPoE server daemon
       PPPoE client
       PPPoE relay configuration file
       PPP daemon

SEE ALSO

       pppd(1), pppoec(1), pppoerd(1M), pppoerd.conf(4).

																       pppoerd(1M)