有一个文件sample.yaml

---
action: "want-to-update"
foo: |-
    {
        "a" : "actual A",
        "b" : "actual B",
        "c" : "actual C"
    }
---
action: "dont-want-to-update"
foo: |-
.
.
.

需要将a字段中的值从actual a更新为updated a
尝试使用yq和jq更新

yq 'select(.action == "want-to-update").foo' sample.yaml | jq '.a = "updated a" | tostring' | xargs -0 -n1 -I{} yq 'select(.action == "want-to-update").foo = {}' -i sample.yaml

输出如下：

---
action: "want-to-update"
foo: |-
  {"a":"updated a","b":"actual B","c":"actual C"}
---
.
.

但我想要上面更漂亮的版本：

---
action: "want-to-update"
foo: |-
    {
        "a" : "updated A",
        "b" : "actual B",
        "c" : "actual C"
    }
---