logger(1) - Manual pages

NAME

logger — make entries in the system log

logger [-46Ais] [-f file] [-h host] [-P port] [-p pri] [-t tag] [message ...]

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. This option is ignored when a message is also specified.
-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 example, ``-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.

The logger utility exits 0 on success, and >0 if an error occurs.

logger System rebooted

logger -p local0.notice -t HOSTIDM -f /dev/idmc

The logger command is expected to be IEEE Std 1003.2 (“POSIX.2”) compatible.