How to grant full permission to a user for a directory

You can grant permissions to a user on a directory (Read, Write, Modify) using the Windows command line, for example,

icacls “D:\dy” /grant administrtor:(OI)(CI)F /T

• F = Full Control
• CI = Container Inherit – This flag indicates that subordinate containers will inherit this ACE.
• OI = Object Inherit – This flag indicates that subordinate files will inherit the ACE.
• /T = Apply recursively to existing files and sub-folders. (OI and CI only apply to new files and sub-folders). Credit: comment by @AlexSpence.

To take ownership:

icacls “D:\dy” /grant Administrators:F /T /C