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LOGGER(1)			 User Commands			     LOGGER(1)

NAME
       logger - a shell command interface to the syslog(3) system log module

SYNOPSIS
       logger [options] [message]

DESCRIPTION
       logger  makes  entries  in the system log.  It provides a shell command
       interface to the syslog(3) system log module.

OPTIONS
       -n, --server server
	      Write to the specified remote syslog server instead  of  to  the
	      builtin syslog routines.	Unless --udp or --tcp is specified the
	      logger will first try to use UDP, but if it fails a TCP  connec‐
	      tion is attempted.

       -d, --udp
	      Use  datagram (UDP) only.	 By default the connection is tried to
	      syslog port defined in /etc/services, which is often 514.

       -T, --tcp
	      Use stream (TCP) only.  By default the connection	 is  tried  to
	      syslog-conn port defined in /etc/services, which is often 601.

       -P, --port port
	      Use the specified port.

       -i, --id
	      Log the process ID of the logger process with each line.

       -f, --file file
	      Log  the	contents of the specified file.	 This option cannot be
	      combined with a command-line message.

       -h, --help
	      Display a help text and exit.

       -p, --priority priority
	      Enter the message into the log with the specified priority.  The
	      priority	may  be	 specified  numerically or as a facility.level
	      pair.  For example, -p local3.info logs the message as  informa‐
	      tional in the local3 facility.  The default is user.notice.

       -s, --stderr
	      Output  the  message  to standard error as well as to the system
	      log.

       -t, --tag tag
	      Mark every line to be logged with the specified tag.

       -u, --socket socket
	      Write to the specified socket instead of to the  builtin	syslog
	      routines.

       -V, --version
	      Display version information and exit.

       --     End  the	argument  list.	 This is to allow the message to start
	      with a hyphen (-).

       message
	      Write the message to log; if not specified, and the -f  flag  is
	      not provided, standard input is logged.

       The logger utility exits 0 on success, and >0 if an error occurs.

       Valid facility names are: auth, authpriv (for security information of a
       sensitive nature), cron, daemon, ftp, kern  (can't  be  generated  from
       user   process),	  lpr, mail, news, security  (deprecated  synonym  for
       auth), syslog, user, uucp, and local0 to local7, inclusive.

       Valid level names  are:	alert, crit, debug, emerg, err, error  (depre‐
       cated  synonym  for  err), info, notice, panic  (deprecated synonym for
       emerg), warning, warn (deprecated synonym for warning).	For the prior‐
       ity order and intended purposes of these levels, see syslog(3).

EXAMPLES
       logger System rebooted
       logger -p local0.notice -t HOSTIDM -f /dev/idmc
       logger -n loghost.example.com System rebooted

SEE ALSO
       syslog(3), syslogd(8)

STANDARDS
       The  logger  command is expected to be IEEE Std 1003.2 ("POSIX.2") com‐
       patible.

AVAILABILITY
       The logger command is part of the util-linux package and	 is  available
       from  Linux  Kernel Archive ⟨ftp://ftp.kernel.org/pub/linux/utils/util-
       linux/⟩.

util-linux			  April 2013			     LOGGER(1)

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