LOGGER(1) General Commands Manual LOGGER(1)

logger — make entries in the system log

logger [-cins] [-d SD] [-f file] [-m msgid] [-p pri] [-t tag] [message ...]

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

Options:

Log to console as a fallback (LOG_CONS): if the message cannot be passed to syslogd(8), the message is written to /dev/console.
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.)
file
Log the specified file.
Log the process id of the logger process with each line (LOG_PID).
msgid
The MSGID used for the message.
Open log file immediately (LOG_NDELAY).
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”.
Log the message to standard error, as well as the system log (LOG_PERROR).
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.

logger System rebooted

logger -p local0.notice -t HOSTIDM -f /dev/idmc

syslog(3), syslogd(8)

The logger utility conforms to IEEE Std 1003.2-1992 (“POSIX.2”).

June 25, 2020 NetBSD 11.0