Ruby ships with a flag you can set to do simple command line parsing. Unfortunately, it doesn't seem to be very well documented. This is what I have found by experimenting.
Notice the shebang has the -s flag set.
Showing what the script sees for $arg1, $arg2, $arg3, $arg4 BASIC BOOLEAN ARGS: ./show-options.rb -arg1 -arg3 $arg1 = true $arg2 = nil $arg3 = true $arg4 = nil SETTING VARIABLES: ./show-options.rb -arg2=123 -arg3='abc def' -arg4=./hello-world.rb $arg1 = nil $arg2 = "123" $arg3 = "abc def" $arg4 = "./hello-world.rb" MIX OF BOTH: ./show-options.rb -arg2 -arg3='abc def' -arg4=123 $arg1 = nil $arg2 = true $arg3 = "abc def" $arg4 = "123"
This code is unmaintained.
If you do something interesting with it, let me know so I can be happy.
Copyright (c) 2010 Joshua Cheek
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