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#sazwqa # find installed ruby Dir.chdir("C:/") versions = Dir.glob("ruby*")[1..-1] versions.each{|v| v.gsub!('ruby','')} current_version = `ruby -v` current_version_suffix = current_version.split[1].gsub('.','') # handle mingw if current_version =~ /mingw/ current_version_suffix = 'win' end # generate menu puts("current version: " + `ruby -v`) puts("Installed ruby versions:") versions.each_with_index { |v, i| p("#{i+1}. #{v}") } print("Select number to change version, or enter to exit: ") choice = gets.chop! exit if choice.empty? # rename File.rename('c:\ruby', "ruby"+current_version_suffix) File.rename("ruby"+versions[choice.to_i-1], 'c:\ruby') puts("\n") if current_version_suffix =~ /19/ # for ruby 1.9 puts("changed version: " + `ruby -v`)

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