day1.rb(main):001:0> #! /usr/bin/env ruby
day1.rb(main):002:0* 
day1.rb(main):003:0* puts 'Hello, World'
Hello, World
=> nil
day1.rb(main):004:0> puts 'Hello, Ruby'.index('Ruby')
7
=> nil
day1.rb(main):005:0> i = 1
=> 1
day1.rb(main):006:0> 
day1.rb(main):007:0* while i <= 10
day1.rb(main):008:1> 	puts "This is sentence number #{i}"
day1.rb(main):009:1> 	i = i + 1
day1.rb(main):010:1> end
This is sentence number 1
This is sentence number 2
This is sentence number 3
This is sentence number 4
This is sentence number 5
This is sentence number 6
This is sentence number 7
This is sentence number 8
This is sentence number 9
This is sentence number 10
=> nil
day1.rb(main):011:0> 
day1.rb(main):012:0* 
day1.rb(main):013:0* randNum = rand(10)
=> 3
day1.rb(main):014:0> guess = 11
=> 11
day1.rb(main):015:0> until guess == 'q' or guess.to_i == randNum
day1.rb(main):016:1> 	puts 'Guess the number (0-9) or "q" to quit'
day1.rb(main):017:1> 	guess = gets.strip
day1.rb(main):018:1> end
Guess the number (0-9) or "q" to quit
Guess the number (0-9) or "q" to quit
Guess the number (0-9) or "q" to quit
Guess the number (0-9) or "q" to quit
Guess the number (0-9) or "q" to quit
Guess the number (0-9) or "q" to quit
=> nil
day1.rb(main):019:0> 
day1.rb(main):020:0* puts "Well done! The number was #{randNum}" unless guess == 'q'day1.rb(main):020:0* 
day1.rb(main):020:0> 
Well done! The number was 3
=> nil