[英]How to get value for key in JSON list of {“k”:foo, “v”:bar} items using jq?
Suppose I have this JSON:假设我有这个 JSON:
[
{
"k": foo,
"v": 1
},
{
"k": bar,
"v": 2
}
]
How to get the value for the "bar"
key?如何获取
"bar"
键的值?
You can use select(expr)
to find the object with a key-value "k":"bar"
and then you can extract the value of the "v"
key.您可以使用
select(expr)
找到具有键值"k":"bar"
的 object,然后您可以提取"v"
键的值。
$ jq . test.json
[
{
"k": "foo",
"v": 1
},
{
"k": "bar",
"v": 2
}
]
$ jq -r '.[] | select(.k == "bar") | .v' test.json
2
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