Ruby Language Getting started with Ruby Language Hello World from IRB

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Alternatively, you can use the Interactive Ruby Shell (IRB) to immediately execute the Ruby statements you previously wrote in the Ruby file.

Start an IRB session by typing:

$ irb

Then enter the following command:

puts "Hello World"

This results in the following console output (including newline):

Hello World

If you don't want to start a new line, you can use print:

print "Hello World"

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