Retrieving value from JSON object in bash using JQ - json

Question

I have the following script:
#!/bin/bash
CONFIG_RECORDER=`aws configservice describe-configuration-recorders`
NAME=$(jq -r ‘.ConfigurationRecorders[].name’ <<<“$CONFIG_RECORDER”)
echo $NAME
I am trying to retrieve the value for name from the following JSON object:
{
"ConfigurationRecorders": [{
"name": "default",
"roleARN": "arn:aws:iam::xxxxxxxxxxxx:role/Config-Recorder",
"recordingGroup": {
"allSupported": true,
"includeGlobalResourceTypes": true,
"resourceTypes": []
}
}]
}
When running the script, I am getting an error stating that jq could not open the file. That is because I am trying to pass in the result stored in a variable. How can I move past this? Below is the error:
jq: error: syntax error, unexpected INVALID_CHARACTER, expecting $end
(Unix shell quoting issues?) at <top-level>, line 1:
‘.ConfigurationRecorders[].name’
jq: 1 compile error

Answer 1

NAME=$(jq -r '.ConfigurationRecorders[].name' <<<"$CONFIG_RECORDER")
<<< is known as here-string.
-r removes the quotes in the result.
[] in the jq query is necessary as ConfigurationRecorders is a JSON array.
$( … ) is just an other form of command substitution than backticks. I prefer this one as it is more readable to me.