在同一行上打印多个值 [英] Printing multiple values on the same line

问题描述

我正在尝试解析JSON文档，并在同一行上打印几个值.有没有办法获取以下文件:

I'm trying to parse a JSON document and print a couple of values on the same line. Is there a way to take the following document:

{
  "fmep": {
    "foo": 112,
    "bar": 234324,
    "cat": 21343423
  }
}

然后吐出来:

112 234324

我可以得到所需的值，但是它们分别打印在单独的行上:

I can get the values I want but they are printed on separate lines:

$ echo '{ "fmep": { "foo": 112, "bar": 234324, "cat": 21343423 } }' | jq '.fmep|.foo,.bar'

112  
234324

如果某处有一个示例演示如何做到这一点，我将不胜感激任何指针.

If there is an example somewhere that shows how to do this I would appreciate any pointers.

推荐答案

示例中最简单的方法是使用

The easiest way in your example is to use String Interpolation along with the -r option. e.g.

echo '{ "fmep": { "foo": 112, "bar": 234324, "cat": 21343423 } }' | \
jq -r '.fmep| "\(.foo) \(.bar)"'

产生

112 234324

您可能还需要考虑将值放入数组中，并使用 @tsv 例如

You may also want to consider putting the values in an array and using @tsv e.g.

echo '{ "fmep": { "foo": 112, "bar": 234324, "cat": 21343423 } }' | \
jq -r '.fmep | [.foo, .bar] | @tsv'

产生制表符分隔的

112 234324

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