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logger(1) [centos man page]

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 log- ger 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/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 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 Linux Kernel Archive <ftp://ftp.kernel.org/pub/linux/utils/util- linux/>. util-linux April 2013 LOGGER(1)

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LOGGER(1)						    BSD General Commands Manual 						 LOGGER(1)

NAME
logger -- make entries in the system log SYNOPSIS
logger [-46Ais] [-f file] [-h host] [-P port] [-p pri] [-t tag] [message ...] DESCRIPTION
The logger utility provides a shell command interface to the syslog(3) system log module. The following options are available: -4 Force logger to use IPv4 addresses only. -6 Force logger to use IPv6 addresses only. -A By default, logger tries to send the message to only one address, even if the host has more than one A or AAAA record. If this option is specified, logger tries to send the message to all addresses. -i Log the process id of the logger process with each line. -s Log the message to standard error, as well as the system log. -f file Read the contents of the specified file into syslog. -h host Send the message to the remote system host instead of logging it locally. -P port Send the message to the specified port number on a remote system, which can be specified as a service name or as a decimal number. The default is ``syslog''. If an unknown service name is used, logger prints a warning and falls back to port 514. -p pri Enter the message with the specified priority. The priority may be specified numerically or as a ``facility.level'' pair. For exam- ple, ``-p local3.info'' logs the message(s) as informational level in the local3 facility. The default is ``user.notice.'' -t tag Mark every line in the log with the specified tag rather than the default of current login name. message Write the message to log; if not specified, and the -f flag is not provided, standard input is logged. EXIT STATUS
The logger utility exits 0 on success, and >0 if an error occurs. EXAMPLES
logger System rebooted logger -p local0.notice -t HOSTIDM -f /dev/idmc SEE ALSO
syslog(3), syslogd(8) STANDARDS
The logger command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. BSD
March 4, 2014 BSD

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