logger(1) - Useful Manual Pages

NAME

logger — make entries in the system log

logger [-is] [-f file] [-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:

-i: Log the process id of the logger process with each line. This flag is ignored and the process id is always logged.
-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.
-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.