如何使用sed在yaml文件中添加密钥

Question

I have a scenario like this:

manifest.yaml

key1: "value1"
key2: "value2"

And I want to update this manifest.yaml file at run time to this

key1: "value1"
key2: "value2"
new_key: "new_value1" 

so how can I add a new key at run time?

Answer 1

Achieved the same by the following command:

sed -i '/key2: "value2"/a new_key: "new_value1"' manifest.yml

and in case if space(5) has to be added before inserting new_key: "new_value1" then it can be done in the following way :

sed -i '/key2: "value2"/a \\ \\ \\ \\ \\ new_key: "new_value1"' manifest.yml