jq获得全部的json的keys

 参考:https://alingse.github.io/jq-manual-cn/manual/v1.5/#TypesandValues

处理方式：

cat *.json|jq "path(..)" 

输出即全部keys，类似如下：

原文：

Note that the path expressions are not different from normal expressions. The expression path(..|select(type=="boolean")) outputs all the paths to boolean values in ., and only those paths.

examples:

• program: ‘path(.a[0].b)’ input: ‘null’ output: [’[“a”,0,”b”]’]
• program: ‘[path(..)]’ input: ‘{“a”:[{“b”:1}]}’ output: [’[[],[“a”],[“a”,0],[“a”,0,”b”]]’]