logger

Add messages to syslog (/var/log/syslog). More information: https://manned.org/logger.

• Log a message to syslog:

logger message

• Take input from stdin and log to syslog:

echo log_entry | logger

• Send the output to a remote syslog server running at a given port. Default port is 514:

echo log_entry | logger --server hostname --port port

• Use a specific tag for every line logged. Default is the name of logged in user:

echo log_entry | logger --tag tag

• Log messages with a given priority. Default is user.notice. See man logger for all priority options:

echo log_entry | logger --priority user.warning