I think we're getting there

client/client.yml

@@ -11,8 +11,8 @@
 # Here's a (hopefully self-explanatory) example:
 #   subscribe:
 #     - topic: mytopic
-#       exec: /usr/local/bin/mytopic-triggered.sh
+#       command: /usr/local/bin/mytopic-triggered.sh
 #     - topic: myserver.com/anothertopic
-#       exec: 'echo "$message"'
+#       command: 'echo "$message"'
 #
 # subscribe:

client/config.go

@@ -7,8 +7,8 @@ const (
 type Config struct {
 	DefaultHost string
 	Subscribe   []struct {
-		Topic string
-		Exec  string
+		Topic   string
+		Command string
 	}
 }