| LOGGER(1) | General Commands Manual | LOGGER(1) | 
NAME
 logger — make entries in the system log
SYNOPSIS
| logger | [-cins] [-d SD] [-f file] [-m msgid] [-p pri] [-t tag] [message ...] | 
 
DESCRIPTION
 logger provides a shell command interface to the 
syslog(3) system log module.
Options:
- 
-c
- 
Log to console (LOG_CONS).
- 
-d sd
- 
Log this in the structured data (SD) field. (sd has to be passed as one argument and will require careful quoting when used from the shell.)
- 
-f file
- 
Log the specified file.
- 
-i
- 
Log the process id of the logger process with each line (LOG_PID).
- 
-m msgid
- 
The MSGID used for the message.
- 
-n
- 
Open log file immediately (LOG_NDELAY).
- 
-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”.
- 
-s
- 
Log the message to standard error, as well as the system log (LOG_PERROR).
- 
-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.
 
EXIT STATUS
 The logger utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
logger System rebooted 
 
logger -p local0.notice -t HOSTIDM -f /dev/idmc
 
STANDARDS
 The logger utility conforms to IEEE Std 1003.2-1992 (“POSIX.2”).