Rename files, moving date part of name from beginning to end

Question

I have filenames that come with the date at the beginning of their names, eg 20171015….txt .

I currently use a batch file to strip off the first 8 characters and this has worked well. However I'd like to now keep the date but move it to the end of the file name.

Answer 1

With the file name without extension set as a variable, %Variable% :

Ren "%Variable%.ext" "%Variable:~8%%Variable:~,8%.ext"

Or if performed within some sort of loop and delayed expansion enabled, ie SetLocal EnableDelayedExpansion :

Ren "!Variable!.ext" "!Variable:~8!!Variable:~,8!.ext"