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Name

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

Synopsis

logger [-isd] [-f file] [-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:

-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
Log the specified file.

-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.

-u sock
Write to socket as specified with socket instead of builtin syslog routines.

-d
Use a datagram instead of a stream connection to this socket.

--
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, 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

See Also

syslog(3) , syslogd(8)

Standards

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

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