cal works on most Unix systems, but is not part of Windows (is there a Powershell equivalent?) If you don't have cygwin (or similar) installed, these types of o

cal works on most Unix systems, but is not part of Windows (is there a Powershell equivalent?) If you don't have cygwin (or similar) installed, these types of one-liners have saved me a number of times for quick hacks on Windows systems.