Unlocking (windows) files on a mac

Once i backup from a windows pc to a nas, and since i'm doing some cleaning i run into locked file problem. First i couldn't unlock them, i don't know for sure what i did (maybe resaving the share on the lacie disk, which by the way is noisy), but since then i could unlock them 1 by 1.

this was not satisfying, so after a bit googling ...


...$ cd /goto/to/your/folder
...$ chflags -R nouchg *