LOGGER man page on Archlinux

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LOGGER(1)			 User Commands			     LOGGER(1)

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

       logger [options] [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) only.	By default the connection is tried  to
	      the syslog port defined in /etc/services, which is often 514.

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

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

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

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

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

	      Look for a syslog prefix on every line read from standard
	      input.   This  prefix  is	 a number within angle brackets
	      that contains both the facility and the level.  This dec‐
	      imal prefix is constructed by multiplying the facility by
	      8	 and  then  adding  the	 level.	  Thus,	 for   example,
	      local0.info, facility=16 and level=6, becomes <134>.

	      If the prefix contains no facility, the facility defaults
	      to what is specified by the -p option.  Similarly, if  no
	      prefix  is provided, the line is logged using the -p pri‐

	      This option doesn't affect a command-line message.

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

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

       -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 (-).

	      Write  this message to the 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

       Valid  facility names are: auth, authpriv (for security informa‐
       tion of a sensitive nature), cron, daemon, ftp, kern  (can't  be
       generated  from user process), lpr, mail, news, security (depre‐
       cated	 synonym     for     auth), syslog, 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 warn‐
       ing).  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")

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

util-linux			  April 2013			     LOGGER(1)

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