From 0bc5bc172c0afbeff20d6fda98d555b8e16acbcd Mon Sep 17 00:00:00 2001
From: kant777 <61204489+kant777@users.noreply.github.com>
Date: Fri, 19 Jan 2024 02:29:14 -0800
Subject: [PATCH] Update deploy_create2.sh

---
 geth-poa/util/deploy_create2.sh | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/geth-poa/util/deploy_create2.sh b/geth-poa/util/deploy_create2.sh
index eda40615ee..197ff8b5f2 100755
--- a/geth-poa/util/deploy_create2.sh
+++ b/geth-poa/util/deploy_create2.sh
@@ -4,11 +4,13 @@
 
 set -e
 
-if [ -z "$1" ]; then
-    echo "Usage: $0 <JSON_RPC_URL>"
+# Use the first command line argument, if provided. Otherwise, use the environment variable.
+JSON_RPC="${1:-$JSON_RPC_URL}"
+
+if [ -z "$JSON_RPC" ]; then
+    echo "Usage: $0 <JSON_RPC_URL> or set the JSON_RPC_URL environment variable."
     exit 1
 fi
-JSON_RPC="$1"
 
 if ! [ -x "$(command -v curl)" ]; then
     echo "Curl must be installed to deploy the create2 proxy" >&2