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

       courierlogger - Courier syslog wrapper

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

       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.

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

	   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

	       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.

	   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.

	   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.

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

	   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.

	       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.

	   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.

	   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

       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.

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

	1. couriertcpd(1)
	   [set	$man.base.url.for.relative.links]/couriertcpd.html

Double Precision, Inc.		  10/28/2019		      COURIERLOGGER(1)


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