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logger

Make entries in the system log (POSIX)

Syntax:

logger [-is] [-f file] [-p pri] [-t tag] [message ...]

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 contents of 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.

message

Write the message to log; if not specified, and the -f flag is not provided, standard input is logged.

Description:

The logger command provides a shell command interface to the syslogd daemon.

Examples:

Log the message "System rebooted":

    logger System rebooted

Log the contents of the file /tmp/log tagging each line with log:

    logger -f /tmp/log -t log

Environment variables:

SYSLOG

When defined, SYSLOG specifies which node syslogd is running on. By default, the local node is assumed.

Exit status:

0

Successful completion.

>0

An error occurred.

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Because the syslog API does not return error codes, only argument errors can be detected.

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See also:

syslog()

syslogd

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