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  • Using the bash scripting for text processing are considered not good thing. Read this discussion: Why is using a shell loop to process text considered bad practice?. Commented Nov 6, 2017 at 23:50
  • @MiniMax Yes, you're right of course. That was just there for fun. I added a comment with your link to the bottom of my solution. Commented Nov 6, 2017 at 23:55