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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 connection 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/ser‐
              vices, which is often 601.

       -P, --port port
              Use  the specified port.  When this option is not specified, the port defaults to syslog for udp and to
              syslog-conn for tcp connections.

       -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 informational 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

              kern       cannot be generated from userspace process, automatically converted to user
              lpr
              mail
              news
              syslog
              user
              uucp
              local0
                to
              local7
              security   deprecated synonym for auth

       Valid level names are:

              emerg
              alert
              crit
              err
              warning
              notice
              info
              debug
              panic     deprecated synonym for emerg
              error     deprecated synonym for err
              warn      deprecated synonym for warning

       For the priority order and intended purposes of these facilities and 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") compatible.

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)