The Windows Management Instrumentation Command-line (WMIC) is a command-line and scripting interface that simplifies the use of Windows Management Instrumentation (WMI) and systems managed through WMI.
Have you ever wanted to test WMI using the command line (outside of VBSCRIPT)? If so, then WMIC is the tool for you. In its simplest form, WMIC is a utility that allows you to interact with WMI from a WMI-aware command-line shell. All WMI objects and their properties, including their methods, are accessible through the shell, which makes WMIC an advanced systems management console.
Details @ Microsoft Technet.