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只有在存在的情况下,才如何将产出转向档案?
原标题:How to redirect output to a file only if it exists?
  • 时间:2012-04-17 02:48:29
  •  标签:
  • bash

这恰恰相反。 我只想更新档案。 我知道,我可以多派指挥,但是否有单一的经营者这样做?

最佳回答

I RTFM和运营商还不存在。

问题回答

最近的我可以认为是<代码>[-f “$filename”]& do some > “$filename”。





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