Ruby Basics

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Note: Do not forget to include the Ruby Shebang "#!/usr/bin/env ruby" on top of each of the Ruby files for it to run successfully. I do not have the Shebang in the code sections as this will be repetitive and it also cause a display error in the Markdown code of this blog.

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“Hello World” Ruby:

The initial “Hello World” code to test if all environment and setup is done successfully.

puts "Hello, World!"

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“Argumentative” Ruby:

A code that tests user inputs though CLI. In this case, the user can input multiple values delimited by a space.

for i in 0 ... ARGV.length
   print "#{ARGV[i]} "
end

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“Here_Kitty” Ruby:

A code that tests user FILE inputs though CLI. In this case, the user can input multiple FILES delimited by a space.

for arg in ARGV
   file = File.open(arg)

   file_data = file.read

   puts file_data
end

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