2022-06-09-08-40

I need some help.
I’m looking for a technique to rename a bunch of files and folders.

2005_03_19_this_is_the_filename.md -> 2005/03/this_is_the_filename/index.md
2007_07_23_another_filename.md     -> 2007/07/another_filename/index.md
2021_01_12_filename.md             -> 2021/01/filename/index.md

Here’s the regex I want to use:

• Regex: /(\d{4})_(\d{2})_(\d{2})_(.*).md/gm
• Substitusion: $1/$2/$4/index.md