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Ruby Programming
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ARGV

Any command-line arguments after the program filename are available to your Ruby program in the global array ARGV. For instance, invoking Ruby as

% ruby -w ptest "Hello World" a1 1.6180

yields an ARGV array containing ["Hello World", a1, 1.6180]. There's a gotcha here for all you C programmers---ARGV[0] is the first argument to the program, not the program name. The name of the current program is available in the global variable $0.
Ruby Programming
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