logger—Make entries in the system log

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

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


-iLog the process ID of the logger process with each line.
-sLog the message to standard error, as well as the system log.
-f fileLog the specified file.
-p priEnter the message with the specified priority. The priority may be specified numerically or as a facility.level pair. For example, –p logs the message(s) as informational level in the local3 facility. The default is user.notice.
-t tagMark every line in the log with the specified tag.
messageWrite 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.

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