BASH script - return two specific values from JSON output using GREP

Question

I have the following JSON output recieved from a google API call, im strugling with a grep to only store "lat" and "lng" values under "geometry"\\"location", so i get an output like:

lat,long

{
   "results" : [
      {
         "address_components" : [
            {
               "long_name" : "",
               "short_name" : "",
               "types" : [ "street_number" ]
            },
            {
               "long_name" : "Kildegade",
               "short_name" : "Kildegade",
               "types" : [ "route" ]
            },
            {
               "long_name" : "Horsens",
               "short_name" : "Horsens",
               "types" : [ "locality", "political" ]
            },
            {
               "long_name" : "Denmark",
               "short_name" : "DK",
               "types" : [ "country", "political" ]
            },
            {
               "long_name" : "8700",
               "short_name" : "8700",
               "types" : [ "postal_code" ]
            }
         ],
         "formatted_address" : "Kildegade, 8700 Horsens, Denmark",
         "geometry" : {
            "location" : {
               "lat" : 55.863466,
               "lng" : 9.848784
            },
            "location_type" : "ROOFTOP",
            "viewport" : {
               "northeast" : {
                  "lat" : 55.86481498029149,
                  "lng" : 9.850132980291503
               },
               "southwest" : {
                  "lat" : 55.8621170197085,
                  "lng" : 9.847435019708499
               }
            }
         },
         "place_id" : "ChIJG8X9xAVjTEYRGwL9QuNARJQ",
         "types" : [ "street_address" ]
      }
   ],
   "status" : "OK"
}

I reckon that i need to make a GREP call after the API KEY, but im kinda stuck, as i get output without any GREP, but nothing when applying any simple GREP.

adresse=$(curl -s "https://maps.googleapis.com/maps/api/geocode/json?address=Kildegade+8700+horsens+denmark"&key=GOOGLE API KEY")

Prior to this i've in some similar JSON output used:

| grep -B 1 "route" | awk -F'"' '/short_name/ {print $4}

But this don't fit into this output, and im just not that powerful in using GREP ;)

Any help would be really helpful, thanks ;)

Answer 1

jq ( https://stedolan.github.io/jq/ ) is a lightweight and flexible command-line JSON processor.

Suppose you want to extract lat and lng fields from your json sample.

You can then use something like jq '.results[].geometry.location' < input.json

Please note in the example above that I'm considering that your json is stored in an file called input.json , but you could just use jq after curl like this: curl ... | jq ... curl ... | jq ...