There’s always a dozen ways to do anything on Linux, and I was looking for a quick and easy way to run a script at startup on Raspbian on a Raspberry Pi.
I found this post:
http://raspberrypi.stackexchange.com/questions/8734/execute-script-on-start-up
which has a number of good suggestions, but the quickest and easiest approach is probably to add a @reboot entry to crontab, as suggested in this post here.