inetutils-logger(1)

Usage

logger [options ...] [message ...]

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

-4, --ipv4: Use IPv4 to connect to hosts.
-6, --ipv6: Use IPv6 to connect to hosts.
-S, --source ip: Set source IP address.
-h, --host host: Log to host instead of to the default /dev/log.
-u, --unix sock: Log to UNIX socket sock instead of /dev/log.
-i, --id [pid]: Log the process id of the logger process with each line.
-s, --stderr: Log the message to standard error, as well as the system log.
-f, --file file: Log the specified file.
-p, --priority 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 tag: Mark every line in the log with the specified tag.
--usage: Display a short usage message.
-?, --help: Display a help list.
-V, --version: Display program version.
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

4 releases since Debian 10 (Buster); the text changed 2 times.