bash-logger/syslog.sh

#!/usr/bin/env bash

# Set syslog_local="TRUE" to only log locally.

syslog_host="syslog.adamonet"
syslog_port="514"
syslog_type="tcp"
syslog_facility="local7"

if [[ -z ${syslog_facility} ]]; then
	syslog_facility="local7";
fi
message="${*:2}"
if [[ -z $2 ]]; then
	priority="${syslog_facility}.info"
	message="$1"
else
	case $1 in
		0|e*) priority="${syslog_facility}.emerg" ;;
		1|a*) priority="${syslog_facility}.alert" ;;
		2|c*) priority="${syslog_facility}.crit" ;;
		3|e*) priority="${syslog_facility}.err" ;;
		4|w*) priority="${syslog_facility}.warning" ;;
		5|n*) priority="${syslog_facility}.notice" ;;
		6|i*) priority="${syslog_facility}.info" ;;
		7|d*) priority="${syslog_facility}.debug" ;;
		*)
			echo "Exit: invalid severity level. No log sent."
			exit 1
			;;
	esac
fi

if [[ $syslog_local == "TRUE" ]]; then
	logger -i \
		-p "${priority}" \
		"${message}"
else
	logger -i --tcp \
		-n $syslog_host \
		-P $syslog_port \
		-p "${priority}" \
		"${message}"
fi