ANSI¶ ↑

Use ANSI codes in printed output, including colors and controlling the cursor, clearing the line, and clearing the screen.

as a gem:

sudo gem install ssoroka-ansi

as a plugin:

script/plugin install git://github.com/ssoroka/ansi.git

require ‘ansi’ # if not installed as a plugin.

1) Simply control the cursor:

>> puts "HELLO" + ANSI.right(30) + "THERE!"
HELLO                              THERE!

2) use colors:

>> puts ANSI.color(:red) { "hello there" }
>> puts ANSI.color(:green) + "Everything is green now" + ANSI.no_color

3) loops:

printf ANSI.clear_screen
puts "Processing users..."
max = User.count
User.all.each_with_index {|user, index|
  user.update_something!
  printf ANSI.left(50) + "Processed #{index}/#{max} users..."
}
puts " done!"