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#!/usr/bin/env ruby
num = ARGV.shift
exit 1 if num.nil?
case File.basename($PROGRAM_NAME)
when 'd'
num = num.to_i(10)
when 'z'
num = num.gsub(/x/i, 'a').gsub(/e/i, 'b').to_i(12)
when 'h'
num = num.to_i(16)
when 'o'
num = num.to_i(8)
when 'b'
num = num.to_i(2)
when 'c'
num = num.ord
end
dec = doz = hex = oct = bin = true
char = num > 31 && num < 128
out = ARGV.shift
case out
when 'd'
doz = hex = oct = bin = char = false
when 'z'
dec = hex = oct = bin = char = false
when 'h'
dec = doz = oct = bin = char = false
when 'o'
dec = doz = hex = bin = char = false
when 'b'
dec = doz = hex = oct = char = false
when 'c'
dec = doz = hex = oct = bin = false
end
puts " Decimal : #{num.to_s(10)}" if dec
puts " Dozenal : #{num.to_s(12).gsub(/a/, 'X').gsub(/b/, 'E')}" if doz
puts "Hexadecimal : 0x#{num.to_s(16)}" if hex
puts " Octal : 0#{num.to_s(8)}" if oct
puts " Binary : 0b#{num.to_s(2)}" if bin
puts " ASCII : '#{num.chr}'" if char
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