使用 jq 将包含值列表的新字段添加到现有 JSON

Question

I would like to add a variable IntendedFor with values scan1 and scan2 to an existing JSON file.

I would like to do this with jq function, I tried:

cat existing.json | jq '.IntendedFor |= "["scan1", "scan2"]"' > output.json

but I get the error and and empty JSON file.

This is what i want the output.json file to look like:

{  "existingjsonstuff": "andsoon",  
   "IntendedFor": ["scan1", "scan2"] 
}

How do i get this??

Answer 1

您可以仅使用+= [..]运算符将所需元素添加到数组中。

jq '.IntendedFor += [ "scan1", "scan2" ]' existing.json > output.json

Answer 2

Yes, thank you! Eventually this code worked:

cat existing.json | jq --argjson args '["scan1","scan2"]' '.{"IntededFor"] += $args' > output.json