MAINT: Failing fast if no SQL is found.

utils/load_settings.sh

@@ -33,6 +33,11 @@ if [[ -n "$ENV_FILE" ]] ; then
     source "$ENV_FILE"
 fi
 
+if [[ -z "$MYSQL_CMD" ]] ; then
+    echo "mysql not defined!"
+    exit 1
+fi
+
 export MYSQL_CMD
 export MYSQLDUMP_CMD
 export MYSQLADMIN_CMD