Add curl check

copy.sh

@@ -11,6 +11,11 @@ if ! command -v wget &> /dev/null; then
   exit 1
 fi
 
+if ! command -v curl &> /dev/null; then
+  echo "curl must be installed!"
+  exit 1
+fi
+
 mkdir -p "$HOME/.tmp" || exit 1
 
 if command -v sudo &> /dev/null && ! command -v sofi &> /dev/null && ! test -f /usr/bin/sofi; then