From f50c6962531db57d7621d8a140eb6efb0ed0ef54 Mon Sep 17 00:00:00 2001
From: DL6ER <dl6er@dl6er.de>
Date: Wed, 29 Jan 2025 19:19:01 +0100
Subject: [PATCH] Use temp variable for curl -V output

Signed-off-by: DL6ER <dl6er@dl6er.de>
---
 gravity.sh | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/gravity.sh b/gravity.sh
index e9da1a97..bc11867f 100755
--- a/gravity.sh
+++ b/gravity.sh
@@ -414,7 +414,7 @@ gravity_DownloadBlocklists() {
     echo -e "  ${INFO} Storing gravity database in ${COL_BOLD}${gravityDBfile}${COL_NC}"
   fi
 
-  local url domain str target compression adlist_type directory
+  local url domain str target compression adlist_type directory curlVersion
   echo ""
 
   # Prepare new gravity database
@@ -496,7 +496,8 @@ gravity_DownloadBlocklists() {
   # Use compression to reduce the amount of data that is transferred
   # between the Pi-hole and the ad list provider. Use this feature
   # only if it is supported by the locally available version of curl
-  if curl -V | grep -q "Features:.* libz"; then
+  curlVersion=$(curl -V)
+  if echo "${curlVersion}" | grep -q "Features:.* libz"; then
     compression="--compressed"
     echo -e "  ${INFO} Using libz compression\n"
   else
@@ -508,11 +509,11 @@ gravity_DownloadBlocklists() {
   # comparing the version string being >= 7.68.0 (released Jan 2020)
   # https://github.com/curl/curl/pull/4543 followed by
   # https://github.com/curl/curl/pull/4678
-  if curl -V | grep -q "curl 7\.[6-9][8-9]"; then
+  if echo "${curlVersion}" | grep -q "curl 7\.[6-9][8-9]"; then
     etag_support=true
   else
     # Check if the version is >= 8
-    if curl -V | grep -q "curl 8"; then
+    if echo "${curlVersion}" | grep -q "curl 8"; then
       etag_support=true
     fi
   fi