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  • Could you please explain how this solves the code injection vulnerability? Commented Jan 22, 2020 at 11:52
  • 1
    @Nikhil Instead of allowing the caller to modify the code by passing strings like . -o "x" ] && sudo reboot || rm files, this restricts the caller to a simple command with a single parameter. Commented Jan 22, 2020 at 11:59