Exit code string output

exitcode.rb

a, *c = $*

str = ""

i = `#{a} #{c*?\s}`

loop {
    p i
    File.write "o.txt", i
    i = `#{a} o.txt`
    s = $?.exitstatus
    p s
    break if s == 0
    str += s.chr
}

puts "Final result: #{str.inspect}"