相关疑难解决方法(0)

如何将最后一列的数字四舍五入到小数点后两位？

我有json：

{
  "took": 1,
  "timed_out": false,
  "_shards": {
    "total": 9,
    "successful": 9,
    "failed": 0
  },
  "hits": {
    "total": 2,
    "max_score": 2.575364,
    "hits": [
      {
        "_index": "my-2017-08",
        "_type": "log",
        "_id": "AV5V8l0oDDWj-VP3YnCw",
        "_score": 2.575364,
        "_source": {
          "acb": {
            "version": 1,
            "id": "7",
            "owner": "pc",
            "item": {
              "name": "Account Average Latency",
              "short_name": "Generate",
              "description": "Generate of last month"
            },
            "service": "gsm"
          },
          "@timestamp": "2017-07-31T22:00:00.000Z",
          "value": 210.08691986891395
        }
      },
      {
        "_index": "my-2017-08",
        "_type": "log",
        "_id": "AV5V8lbE28ShqBNuBl60",
        "_score": 2.575364,
        "_source": {
          "acb": {
            "version": …

jq 中的 round 函数不起作用。

$ jq '10.01 | round'
jq: error: round/0 is not defined at <top-level>, line 1:
10.01 | round        
jq: 1 compile error

$ jq --help
jq - commandline JSON processor [version 1.5-1-a5b5cbe]

我需要做什么？