windows - Rename Multiple files with in Dos batch file

Question

I wish to rename all files inside the folder *.txt, so the result will be "1.txt", "2.txt" and "3.txt", ....

How can I do so?

Answer 1

The following may accomplish what you are looking for. It uses a for loop to iterate through the text files and makes a "call" to another bit of the batch file to do the rename and increment of a variable.

Edit Change math operation to cleaner solution suggested by Andriy.

@echo off
set i=1
for %%f in (*.txt) do call :renameit "%%f"
goto done

:renameit
ren %1 %i%.txt
set /A i+=1

:done