how can i replace part of the value in v4?

[pycgo]

origin file

spring:
  dataSource:
    username: zxx
    password: 123456
    url: jdbc:mysql://test.bd.com:3306

i hope test.bd.com will replace to other string like "testNew.bd.cn"

spring:
  dataSource:
    username: zxx
    password: 123456
    url: jdbc:mysql://testNew.bd.cn:3306

[mikefarah]

yq doesnt have string replace (yet) best way you can do it is to extract the value out, pipe it through sed to update it, then write it back using yq.

It's cumbersome but it should work till a replace operator is added

[mikefarah]

You've inspired me, and I've added a 'sub' operator (like the jq one) it's documented here: https://mikefarah.gitbook.io/yq/operators/string-operators#substitute-replace-string-with-regex - available in 4.7.0

[mikefarah]

In your case, it would be:

yq e '.spring.dataSource.url |= sub("test.bd.com"; "testNew.bd.cn")' examples/data1.yaml

[pycgo]

That's great. That's what I want. thank you