Equivalent of chmod to change file permissions in Windows

Greg mentions - but isn't anywhere close to - can set Read-only/Hidden attributes of a single file - it doesn't provide fine-grained controls like does. sets/resets the access control lists, so you can grant/deny rights for individual SIDs & groups. It is fairly complicated though. Here's an example I have saved in my github gist; it resets the ownership and access control list for all files in a folder and is particularly useful to fix those annoying "You need permissions from .. to perform th…