The copy changed files tool is a free program that lets you copy changed files from one directory tree to another. The program only copies changed files, leaving all other files behind. You can either select to use the date and time for change check, or you can use the binary compare option. When you have selected how to check for changed files, you can select if you want to append date and/or time to the destination directory/file.
Homepage:
https://tsr-soft.com/products/copy-changed-files/
Download:
https://tsr-soft.com/products/copy-chan ... nload.aspx
It is portable, but does use .NET framework, sooo..maybe not totally portable. Extract using an extractor (I used Innoup). It creates a '.ini' file when run.
