UNIX/LINUX Command – logger


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.


Options Description
-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.
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.

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