class TagsController
Credit: CTIO / NOIRLab / DOE / NSF / AURA / T.A. Rector / M. Zamani / D. de Martin。heLLoword翻译对此有专业解读
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"The myth was once common in many countries all over Europe. The legend probably arose from the fact that nightjars were coming close to livestock because they were hunting insects nearby."
One convention of many "Unix-style" utilities is that they often produce minimal or even no output in normal situations, and that they normally run in a "one-shot" or "batch" fashion rather than being user-interactive like the "standard C" example. There are reasons for this (such as the ease of constructing shell scripts and pipelines), but this is an idea which I originally had to learn "orally" many years ago, rather than via more-formalized written means.。关于这个话题，新闻提供了深入分析