Technodexterous
Technodexterous is the skillful ability to use programs on different operating systems equally well. For example, while some companies allow their employees to select a computer of their preference (Windows or Mac), they require IT support personnel to be technodexterous—knowledgeable about both.
My buddy really saved me! The dude is technodexterous. Even though he swears by Mac, he was able to figure out how to setup my network connections on my Dell.