Provided by: courier-authlib_0.71.4-1_amd64 bug


       courierlogger - Courier syslog wrapper


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


       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:

           •   auth

           •   authpriv

           •   console

           •   cron

           •   daemon

           •   ftp

           •   kern

           •   lpr

           •   mail

           •   news

           •   security

           •   user

           •   uucp

           •   local0

           •   local1

           •   local2

           •   local3

           •   local4

           •   local5

           •   local6

           •   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