There're many ways to change file attributes. It can be done through Windows Explorer, DOS ATTRIB comand, third party utilites, e.t.c. Also it can be done programmatically using Windows Scripting Host (WSH) or/and Windows API.

UDF below generates 128-bit GUID and returns it as a string in the format 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx'.

MSDN:

• CoCreateGuid
• StringFromGUID2

MSDN:

• CreateDirectory function - Creates a new directory one level at a time
• SHCreateDirectory function - Creates a new directory including all intermediate folders, if necessary
• CreateFolder Method - WSH
• NewFolder Method - Shell

Relevant MSDN links:

• Windows System Services - Service Functions
• Windows Shell - IsServiceRunning Method
• Windows Shell - ServiceStart Method
• Windows Shell - ServiceStop Method

MSDN links:

• WNetGetConnection
• WSH FileSystemObject Object

* Windows API
FUNCTION LocalDevice2UNC(tcLocalName)
LOCAL lcUNCBuffer, lnLength, lcLocalName, lcRemoteName
DECLARE INTEGER WNetGetConnection IN WIN32API ;
	STRING lpLocalName, STRING @ lpRemoteName, INTEGER @ lplnLength
IF TYPE('tcLocalName') <> "C" OR EMPTY(tcLocalName) 
	ERROR 11
ENDIF

MSDN links:

• Run Method (Windows Script Host)
• ShellExecute Function
• The Shell Open Method

MSDN links:
Windows Explorer Command-Line Options
Run Method (Windows Script Host)
ShellExecute Function

Code below shows how to retrieve file date and time using native VFP commands or WSH. For Windows API based solution that also allows to set file date and time, see George Tasker's Windows Time hosted on UT

MSDN links:

• WSH FileSystemObject Object
• WSH File Object

MSDN:

• Environment Variables
• SendMessageTimeout Function
• WM_SETTINGCHANGE
• WSH RegWrite method

The CopyFile() and MoveFile() WIN API functions preserve the case of the name for the destination file. Alternatively, WSH can be used.
The source and destination file names should include the directory name in both cases.

Note 1 A Copy operation will not change file name case when destination file already exists (overwritten).

Note 2 The WinApiErrMsg is used to retrieve Windows API error message in case of error.