[SOLVED] Extract a value from a single line of JSON

Issue

How can extract the value using a sed or awk command where jp or any JSON content in not allowed?

{"test":{"components":[{"metric":"complexity","value":"90"}]}}

Output:

 90

I tried with the below command, but I am getting the below error:

def value=sh (script: 'grep -Po \'(?<="value":")[^"\\]*(?:\\.[^"\\]*)*\'  sample.txt')

But getting the below error from the Jenkins script:

grep: missing terminating ] for character class

Solution

Though passing JSON content should be done by a JSON parser, since the OP told the jq tool is not allowed to adding to this solution here, strictly written and tested with shown samples only.

awk 'match($0, /"value":"[0-9]+/){print substr($0, RSTART+9,  RLENGTH-9)}'  Input_file

Answered By - RavinderSingh13

Answer Checked By - David Goodson (WPSolving Volunteer)