ルートは.
```
[natasha3:~]$ echo '{"name": ["zzzz","xxxx"]}'  | jq .
{
  "name": [
    "zzzz",
    "xxxx"
  ]
}
```
.に名前入れると下の要素へ
```
[natasha3:~]$ echo '{"name": ["zzzz","xxxx"]}'  | jq .name
[
  "zzzz",
  "xxxx"
]
```
配列入れれば配列が出る
```
[natasha3:~]$ echo '{"name": ["zzzz","xxxx"]}'  | jq .name[0]
"zzzz"
```