make defaults configurable

profile.d/info.sh

@@ -108,7 +108,12 @@ meteo()
 
     local cities=("$@")
     local city="" encoded=""
-    [[ $# -eq 0 ]] && cities=("$DEFAULT_CITY")
+    [[ $# -eq 0 ]] && cities=("${METEO_DEFAULT_CITY:-}")
+
+    if [[ ${#cities[@]} -eq 0 || -z "${cities[0]}" ]]; then
+        disp E "No city given and METEO_DEFAULT_CITY is not set. Use 'meteo <city>'."
+        return 1
+    fi
 
     for city in "${cities[@]}"; do
         encoded=$(urlencode "$city")