Issue
Here is the JSON Response in a File, namely, RGLogin.json
{"response":{"session_id":"2d48cc11ceabf28c9e92f4b677337dcd"},"response_status":200,"response_details":null}
The grep command below can retrieve session_id
grep -m1 -oP '\s*"session_id"\s*:\s*"\K[^"]+' RGLogin.json
But the following grep command can not retrieve response_status
grep -m1 -oP '\s*"response_status"\s*:\s*"\K[^"]+' RGLogin.json
Solution
For session id, it is looking for quotes. For response status, it is not quoted.
grep -m1 -oP '\s*"response_status"\s*:\s*\K[^,]+' RGLogin.json
Answered By - Guru Answer Checked By - Katrina (WPSolving Volunteer)