Tourmaline

A configurable ruby interpreter for the command line

Setup

gem install tourmaline

Plugins

Tourmaline's functionality can be extended via ruby scripts (*.rb files). Just place them inside the ~/.tourmaline/lib folder.

As an example, create the file ~/.tourmaline/lib/plugin_file.rb with the code:

def execute_plugin
  puts "plugin executed!"
end

Given that, you will be able to run rb 'execute_plugin'

Examples

Show only the time of each ping:

ping www.google.com | rb 'lines.include?("time=").split("time=")[1].puts'

Sum the first three numbers:

echo -e '1\n5\n3\n7\n' | rb 'lines.take(3).to_i.inject(:+).puts'

Echo until "quit" is entered:

rb 'lines.take_while{|l|l!="quit"}.puts'

Play rock, paper, scissors:

rb 'doing{["rock", "paper", "scissors"].sample}.take(2).puts'