COURIERLOGGER(1)					      Double Precision, Inc.						  COURIERLOGGER(1)

NAME

       courierlogger - Courier syslog wrapper

SYNOPSIS

       courierlogger [-name=title] [-facility=subsystem] [-pid=filename] [-user=user] [-group=group] [-droproot]
		     [[[-respawn] [-start] program [argument...]] | [-stop] | [-restart]]

DESCRIPTION

       courierlogger is a wrapper that captures another process's error messages, and forwards them to the system logging facility, "syslog".

       There are two ways to use courierlogger:

	1.  Use the shell to pipe another command's standard error, and/or its standard output, to courierlogger's standard input.

	2.  Alternatively, courierlogger itself can start another process, and arrange to have its standard error captured.

       In either case, each read line of text is sent as a syslog message.

OPTIONS

       -name=title
	   Use title for sending messages to syslog.  title should be the application's name.

       -facility=subsystem
	   Use subsystem for classifying messages. Your syslog facility uses subsystem to determine which log messages are recorded in which log
	   files. The currently defined subsystems are:

	   o   auth

	   o   authpriv

	   o   console

	   o   cron

	   o   daemon

	   o   ftp

	   o   kern

	   o   lpr

	   o   mail

	   o   news

	   o   security

	   o   user

	   o   uucp

	   o   local0

	   o   local1

	   o   local2

	   o   local3

	   o   local4

	   o   local5

	   o   local6

	   o   local7

	       Note
	       Not all of the above facility names are implemented on every system. Check your system's syslog documentation for information on
	       which facility names are allowed, and which log files record the corresponding messages for each facility.

       -pid=filename
	   Save courierlogger's process ID in filename. The -pid option is required when -start, -stop, -restart are given. If -pid is given
	   without any of these, -start is assumed.

       -start
	   Run as a daemon. The pid option is required.  courierlogger will quietly terminate if another courierlogger process is already running.
	   This is used to make sure that only one instance of program is running at the same time. Specify a different filename with pid to start
	   a second copy of program.

       -respawn
	   Restart program if it terminates. Normally courierlogger itself will terminate when program finishes running. Use respawn to restart it
	   instead.

       -restart
	   Send a SIGHUP signal to the courierlogger process (as determined by examining the contents of the file specified by pid), which will in
	   turn send a SIGHUP to its child program. Does nothing if courierlogger is not running.

	   Note
	   program must be originally started with the respawn option if sending it a SIGHUP causes it to terminate.

	   The same thing may be accomplished by sending SIGHUP to courierlogger itself.

       -stop
	   Send a SIGTERM signal to courierlogger, which in turn forwards it on to program. If program does not terminate in 8 seconds, kill it
	   with SIGKILL.

       -user=user, -group=group
	   If running as root, change credentials to the given user and/or group, which may be given as names or numeric ids.

	   When running a child program, it is started before privileges are dropped (unless the -droproot option is also given). This gives a
	   means of starting a child as root so it can bind to a privileged port, but still have courierlogger run as a non-root user. For the
	   -stop and -restart options to work, you should configure the child program to drop its privileges to the same userid too.

       -droproot
	   Drop root privileges before starting the child process. The -user and -group options specify the non-privileges userid and groupid.
	   Without the -droproot option the child process remains a root process, and only the parent courierlogger process drops root privileges.

       program [ argument ] ...
	   If a program is given program will be started as a child process of courierlogger, capturing its standard error. Otherwise,
	   courierlogger reads message from standard input, and automatically terminates when standard input is closed.

SEE ALSO

       couriertcpd(1)[1], your syslog man page.

NOTES

	1. couriertcpd(1)
	   couriertcpd.html

Double Precision, Inc.						    08/23/2008							  COURIERLOGGER(1)