Runas Different Credentials In Command Prompt

Sometimes you need to run an executable as a different user via command prompt:
- in scripts
- in Windows 2008 (not 2008 R2), you cannot use shift right click to "run as different user"

Windows come with a command line tool called "runas", which allow users to execute anything as a different user, in the following syntax
runas /user domain\username "full path to exe"

ie.
runas /user domain\username "c:\temp\temp.exe /a /l /r"

Removing Empty Folders In Command Prompt

For a quick way to batch remove all empty folders, "cd" into that folder and perform the following:

for /f "usebackq delims=" %d in (`"dir /ad/b/s | sort /R"`) do rd "%d"

Please backup the source folder before doing so, just in case.  Afterwards, you can use beyond compare and order by folder size to compare the results.