Here is a snippet of the output when I do a basic jq, what I want to get is the data of the partitions.
jq .
[
{
"partitions": [
"name@website
],
"os_pid": "20458",
"fd_used": 20,
"fd_total": 1024,
"sockets_used": 2,
"sockets_total": 829,
"mem_used": 41128152,
When I do jq '.partitions' I get Cannot index array with string "partitions" - Any thoughts as to why that happens?
You have an array, where each element has a partitions field. You ask to get "partitions", but you don't say from which element or elements in the array.
Here's a complete, self-contained file:
[
{
"partitions": [ "name@website" ]
},
{
"partitions": [ "more" ]
}
]
Your expression produces the error you say:
$ jq '.partitions' file
jq: error (at file:8): Cannot index array with string "partitions"
You can get "partitions" for the first element:
$ jq '.[0].partitions' file
[
"name@website"
]
Or for each elements:
$ jq '.[].partitions' file
[
"name@website"
]
[
"more"
]
Or join all the partitions from each element into one list:
$ jq 'map(.partitions) | add' file
[
"name@website",
"more"
]
