change permissions for all files in a directory windows 10

In fact, this is the way most permissions in NTFS are set relatively few object have explicit ACLs. NTFS supports permission inheritance, where an object (file, directory, reparse point, etc.) can have some permissions inherited from its container (directory).If neither user nor any of the user's groups have either allow nor deny entries, the default is to not allow (deny).

In other words, a deny on a specific user always wins, but an allow on a specific user beats a deny on a group the user belongs to, but if the user neither has allow nor deny entries then if any of the user's groups have a deny then this trumps any allows that the user's group has. They are evaluated in the following order: user deny > user allow > group deny > group allow. NTFS ACLs support both 'allow' and 'deny' entries, for both users and groups.Win32 has no equivalent of the umask, but you can fake it using directory inheritance (which Unix mostly doesn't use).Ī few things to bear in mind when doing this: In addition to being relatively easy, it has the perk of acting more like the way most Unix-like systems work, where new (in this case, downloaded) files are not executable by default. Changing permissions on the directory is probably the best way to go, yes.

Change permissions for all files in a directory windows 10