You could try this - http://andre-simon.de/doku/rpi_gpio_lua ... io_lua.php - I don't have lua installed on my Raspberry Pi so I don't know how well it works.

I've just seen your message. Thanks, it's good to know and will encourage me to make time to learn Wolfram.

Great !! I'm sure that you are going to enjoy learning Ruby.

I downloaded the 2.2.1 source from https://www.ruby-lang.org/en/downloads/ using Epiphany. Clicking on the link for the source code for Ruby 2.2.1. When it was downloaded, the extract window popped up and I extracted. The suggested location would be fine: pi/downloads/ruby-2.2.1 Next I opened the te...

Actually, I believe that Ruby 1.9.3 code will run happily under Ruby 2+. As I understand, the main changes between Ruby 1.9 and Ruby 2.0 are some additions to the language and the default encoding for text encoding being changed to UTF-8. To check, I installed Ruby 2.2.1 on a Raspberry Pi by downloa...

You could install Ruby 2.0.0 using one of the popular version managers, RVM or Rbenv. This would allow you to keep the installed Ruby untouched and switch between it and Ruby 2.0.0 as you wish. There is a little bit of "fiddling around" to install them so it wouldn't be an ideal solution unless you ...

Many thanks for that link Rich. Actually I did finally manage to install JRuby but I didn't leave a note here.

This is how I did it: http://peterwawood.blogspot.com/2014/09 ... ry-pi.html

I asked a similar question on the Wolfram Raspberry Pi forum. The answer was that Munit is not in the current Raspberry Pi release and that it may be in a future one.

I do hope so.

The unit tests also appear to be missing from the Notebooks too. I get the same "Get::noopen: Cannot open MUnitLoader`." message.

Is it possible to write Wolfram tests using the Wolfram command line. When I tried I got this message and the tests didn't run: Wolfram Language (Raspberry Pi Pilot Release) Copyright 1988-2014 Wolfram Research Information & help: wolfram.com/raspi In[1]:= VerificationTest[Sin[E]>Cos[E]] Get::noopen...

The script that you linked to will install rbenv, a method to manage multiple versions on Ruby . There is no need to remove the existing version of Ruby prior to installing first.

May I ask how you installed JRuby 1.7.11 ?