https://github.com/Neilpang/acme.sh/issues/258

dnsapi/dns_gd.sh

@@ -38,7 +38,7 @@ dns_gd_add(){
 
   _info "Adding record"
   if _gd_rest PUT "domains/$_domain/records/TXT/$_sub_domain"  "[{\"data\":\"$txtvalue\"}]"; then
-    if [ "$response" == "{}" ] ; then
+    if [ "$response" = "{}" ] ; then
       _info "Added, sleeping 10 seconds"
       sleep 10
       #todo: check if the record takes effect