Linux write message to log file from .service

As part of trying to debug the .service that I set up for installing the RTC chip on my BeagleBone at boot time, I was interested in writing messages to the Linux system logs from the shell script that it called. This turns out to be fantastically easy; there seems to be a couple of different commands that can be used, I went with the 'logger' command, as described in this link:

http://www.cyberciti.biz/tips/howto-linux-unix-write-to-syslog.html