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#! /usr/local/bin/ruby
path = $ENV['PATH'].split(/:/)

for dir in path
  for f in d = Dir.open(dir)
    fpath = dir+"/"+f  
    if File.f(fpath) && (File.stat(fpath).mode & 022) != 0
      printf("file %s is writable from other users\n", fpath)
    end
  end
  d.close
end