Alma wiki

Use original Exif date to add it to the file name, and also move the file to a folder by year-month:

dest=/path/to/by_month # set destination to a different path
exiftool -d '/path/to/bymonth/%Y-%m/%Y-%m-%d_%%f-v%%02.c.%%e' '-FileName<DateTimeOriginal'

• %%f : original filename (basename) without extension *
• %%02.c : Numbering in case of duplicates: "00", "01", etc. *
• %%e : extension

See also: https://exiftool.org/filename.html

After the Exif rename, remove the unneeded "-v00" extension in the destination:

find "$dest" -iname "*-v00.jpg" -exec rename -v 's/-v00(\.jpg)/$1/i' {} +

exiftool '-FileModifyDate<DateTimeOriginal' * 

or

find . -iname "*.jpg" -exec exiftool '-FileModifyDate<DateTimeOriginal' {} +