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Mass rename files in Unix with iteration index

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I already wrote a post a while ago about how to mass rename files in Unix. But today I was faced with the challenge to do the same trick, except rename each file to an increased number.
I had a whole folder with all kind of PNG images, and I had to rename them to image-1.png , image-2.png , etc…
After a bit of research I finally came up with this one-liner:

What it basically does:

  • It sets a variable called $c .
  • It starts a for-loop for every PNG file.
  • In each iteration it increases $c  with 1 and simply renames the file.

I hope that this helps you if you’re trying to achieve the same result.

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