WMIC is a command line interface to WMI (Windows Management Instrumentation). WMI is a powerful management interface that we can access from directly from command line. WMIC can be used to manage remote computers. If we want to execute WMIC commands on a single computer we prepend command with /node: as shown below: /node:hostname123 - specifies single server ( wmic /node:hostname123 qfe where hotfixid="KB974571" list full) If we want to execute WMIC commands on multiple computers listed in c:\nodes.txt we prepend command with /node:@ as shown below: /node:@'c:\node.txt' - specifies text file with server names ( wmic /node:@'c:\node.txt' qfe where hotfixid="KB974571" list full) It's worth keeping in mind that not all WMI classes have corresponding classes (called aliases) in WMIC. It is however possible to access WMI classes directly from WMIC: wmic /namespace:\\root\ NAMSPACE path CLASSNAME ...
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Source: Wikipedia