NAME

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

SYNOPSIS

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

DESCRIPTION

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

     Options:

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

     -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 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  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 (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).

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
     ftp://ftp.kernel.org/pub/linux/utils/util-linux/.