PowerShell: Remove readonly attribute

To remove a file READONLY attribute from a file using powershell the following command does the job:

attrib -h -r -s drive:\<path>\<foldername>

* note:you need to first remove the hidden attributes otherwise you will recieve the following error: “Not resetting hidden file.”

To further extend, you can view file attributes using:

attrib drive:\<path>\<foldername>

and make the file readonly using:

attrib +r drive:\<path>\<foldername>

and make the file both hidden and readonly using

attrib +h +r drive:\<path>\<foldername>

Reference: http://support.microsoft.com/kb/326549