Questions and Answers

What is the difference between puts and print?

The puts (short for "put string") and print commands are both used to display the results of evaluating Ruby code. The primary difference between them is that puts adds a newline after executing, and print does not.

excerpt from https://www.codecademy.com/articles/glossary-ruby#puts-vs-print

Can one build mobile apps with Ruby where ruby is executed on the mobile device?

Yes and no. See http://stackoverflow.com/questions/4075610/can-we-use-ruby-on-rails-to-develop-a-mobile-app for a general discussion.

If you still want to do it, you might want to take a look at

• http://www.rubymotion.com/
• http://mobiruby.org/

How to listen to internet radio from the command line?

Install mpv player by typing sudo apt-get install mpv in the command line

In file: .bashrc

alias radio.wfmu="mpv http://mp3stream.wfmu.org"
alias radio.oe1="mpv mms://apasf.apa.at/oe1_live_worldwide"
alias radio.fm4="mpv http://mp3stream1.apasf.apa.at:8000/"
alias radio.o94="mpv http://orange-01.live.sil.at:8000"
alias radio.88vier="mpv http://ice.rosebud-media.de:8000/88vier"
alias radio.dradio="mpv http://dradio-ogg-dlf-l.akacast.akamaistream.net/7/629/135496/v1/gnl.akacast.akamaistream.net/dradio_ogg_dlf_l"
alias radio.funkhauseuropa="mpv http://fhe-ogg.akacast.akamaistream.net/7/933/199785/v1/gnl.akacast.akamaistream.net/fhe-ogg"
alias radio.fluxfm="mpv http://fluxfm.hoerradar.de/fluxfm-berlin"
alias tv.arte="(firefox http://www.arte.tv/guide/de/live > /dev/null 2>&1) &"

Restart your terminal for the changes to take effect

You can not listen to the above radio stations by typing the aliases, e.g. radio.dradio in the command line