Run curl/shell script with arguments in Logstash config file

[dx123]

Here I have a bash shell script containing a curl command that runs an Elasticsearch query.

curl -XGET "http://localhost:9200/index_name/_search?" -H 'Content-Type: application/json' -d'
{
  "size": 0,
  "aggs": {
    "by ip": {
      "terms": {
        "field": "ip.keyword"
      },
      "aggs": {
        "by date": {
          "date_histogram": {
            "field": "source time",
            "interval": "day"
          }
        }
      }
    },
    "range": {
      "date_range": {
        "field": "source time",
        "ranges": [
          {
            "from": "2018-01-01", <--- 
            "to": "now/d" <--- 
          }
        ]
      }
    }
  }
}'

Here I run my shell script in my Exec Input plugin.

input {
  exec {
    codec => "json"
    command => "./Desktop/scripts/script-name.sh"
    interval => 1800
  }
}

The 2 range date fields (From and To) in my query are static and I would like to be able to run the shell script command with arguments that can replace the values in them dynamically.

Something like "./Desktop/scripts/script-name.sh/fromdate-value-goes-here/todate-value-goes-here"? I'm not sure if this is the right way. Any help is appreciated.