reference endpoints

reference-rpc-endpoint.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+# Check if the script is provided with the correct number of arguments
+if [ $# -lt 1 ] || [ $# -gt 2 ]; then
+    echo "Usage: $0 <key> [<index>]"
+    exit 1
+fi
+
+# Key provided as the first argument
+key="$1"
+
+# Set index to 0 if not provided as the second argument
+index="${2:-0}"
+
+# Check if the JSON file exists
+json_file="reference-rpc-endpoint.json"
+if [ ! -f "$json_file" ]; then
+    echo "Error: JSON file '$json_file' not found."
+    exit 1
+fi
+
+# Use jq to extract the element of the array corresponding to the key and index
+element=$(jq -r ".$key[$index]" "$json_file")
+
+# Check if the key exists in the JSON file
+if [ "$element" = "null" ]; then
+    echo "Error: Key '$key' not found in the JSON file or index '$index' out of range."
+    exit 1
+fi
+
+# Print the element
+echo "$element"