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LOGGER(1) General Commands Manual LOGGER(1) NAME logger -- make entries in the system log SYNOPSIS logger [-46Ais] [-f file] [-H hostname] [-h host] [-P port] [-p pri] [-S addr:port] [-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 ad- dress, 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. This flag is ignored and the process id is always logged. See also -t. -s Log the message to standard error, as well as the system log. -f file Read the contents of the specified file into syslog. This op- tion is ignored when a message is also specified. -H hostname Set the hostname in the header of the message to specified value. If not specified, host part of gethostname(3) will be used. -h host Send the message to the remote system host instead of logging it locally. Note that logger currently supports AF_INET (IPv4), AF_INET6 (IPv6), and AF_LOCAL (Unix-domain socket) ad- dress families. The following address formats are valid in host: AF_INET 192.168.2.1 AF_INET6 2001:db8::1 AF_LOCAL /var/run/log -P port Send the message to the specified port number on a remote sys- tem, 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 example, "-p local3.info" logs the message(s) as informational level in the local3 facility. The default is "user.notice". -S addr:port Specify source address and/or source port when using -h option. The same address will be used for all of the remote addresses when -A flag is enabled. Note that a numeric IPv6 address in addr must be enclosed with "[" and "]". -t tag Mark every line in the log with the specified tag rather than the default of current login name. Use -t tag[N] to insert specific decimal process id instead of id of logger. 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") com- patible. FreeBSD 13.2 July 3, 2023 LOGGER(1)
NAME | SYNOPSIS | DESCRIPTION | EXIT STATUS | EXAMPLES | SEE ALSO | STANDARDS
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