The df command provides information on file system usage, but includes quite a few options. This post examines the differences and makes some suggestions about when you should use which of the two ...

Deion Sanders, one of the NFL’s best and most flamboyant players ever, was fond of saying that you “gotta look good to play good.” From tucking two towels into his belt on the gridiron to cutting off ...

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Summary and Important Ideas: China’s growing missile capabilities, particularly the DF-21D and DF-26B, pose significant threats to U.S. Navy aircraft carriers and other surface warships in the ...

From the front the Nikon Df is a striking camera, boasting a retro design that we think will appeal to old and new Nikon users alike, especially when the matching special edition silver-banded 50mm ...

An image of a hypersonic glider-like object broadcast by Chinese state media in October 2017. No known images of the DF-17’s hypersonic glide vehicle exist in the public domain. Credit: CCTV screen ...

Summary and Key Points: China’s Dong Feng-21 missile, first deployed in 1991, embodies Beijing’s long-standing strategy of “Active Defense,” which is strategically defensive but operationally ...