Jq to replace a word with in the json.md

Query: Jq to replace a word with in the json

(jump to the answer)

I have a json below and i need to fetch the value of the key "toModify" in data section. And also wanted to modify the key(toModify) value with another value Ex: hello1234567 to xyz. How can we do that using jq.

{
  "items": [
    {
      "source": {
        "id": "12334"        
      },
      "data": {
        "name": "test",
        "value": "test",        
        "cData": [
          {
            "key": "keOne",
            "value": "hello"
          },
          {
            "key": "toModify",
            "value": "hello1234567"
          }
        ]
      } 
    }
  ]
}

A:

with jtc the ask is trivial:

bash $ <file.json jtc -w'[key]:<toModify>[-1][value]' -u'"xyz"'
{
   "items": [
      {
         "data": {
            "cData": [
               {
                  "key": "keOne",
                  "value": "hello"
               },
               {
                  "key": "toModify",
                  "value": "xyz"
               }
            ],
            "name": "test",
            "value": "test"
         },
         "source": {
            "id": "12334"
         }
      }
   ]
}
bash $ 

And if in-place file modification is required, then use:

bash $ jtc -w'[key]:<toModify>[-1][value]' -u'"xyz"' -f file.json