logger man page on ElementaryOS

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LOGGER(1)			 User Commands			     LOGGER(1)

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

     logger [-dhisV] [-f file] [-n server] [-P port] [-p pri] [-t tag]
	    [-u socket] [message]

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


     -d, --udp
	      Use datagram (UDP) instead of the default stream connection

     -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.

     -n, --server server
	      Write to the specified remote syslog server using UDP instead of
	      to the builtin syslog routines.

     -P, --port port
	      Use the specified UDP port.  The default port number is 514.

     -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

     -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

     -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), sys‐
     log, user, uucp, and local0 to local7, inclusive.

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

	   logger System rebooted

	   logger -p local0.notice -t HOSTIDM -f /dev/idmc

	   logger -n loghost.example.com System rebooted

     syslog(3), syslogd(8)

     The logger command is expected to be IEEE Std 1003.2 (“POSIX.2”) compati‐

     The logger command is part of the util-linux package and is available
     from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

util-linux			August 2011			    util-linux

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