diff --git a/project-cljs.clj b/project-cljs.clj
index ea8f2de..7e16635 100644
--- a/project-cljs.clj
+++ b/project-cljs.clj
@@ -1,4 +1,4 @@
-(defproject org.domaindrivenarchitecture/c4k-common-cljs "1.1.1-SNAPSHOT"
+(defproject org.domaindrivenarchitecture/c4k-common-cljs "1.2.0"
   :description "Contains predicates and tools for c4k"
   :url "https://domaindrivenarchitecture.org"
   :license {:name "Apache License, Version 2.0"
diff --git a/project.clj b/project.clj
index a7c5266..8a276ab 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject org.domaindrivenarchitecture/c4k-common-clj "1.1.1-SNAPSHOT"
+(defproject org.domaindrivenarchitecture/c4k-common-clj "1.1.1"
   :description "Contains predicates and tools for c4k"
   :url "https://domaindrivenarchitecture.org"
   :license {:name "Apache License, Version 2.0"
diff --git a/src/main/cljc/dda/c4k_common/common.cljc b/src/main/cljc/dda/c4k_common/common.cljc
index bbf1ffd..9b80e41 100644
--- a/src/main/cljc/dda/c4k_common/common.cljc
+++ b/src/main/cljc/dda/c4k_common/common.cljc
@@ -2,9 +2,12 @@
   (:require
    [clojure.walk]
    [clojure.spec.alpha :as s]
+   [clojure.string :as cs]
+   [clojure.tools.reader.edn :as edn]
    #?(:clj [orchestra.core :refer [defn-spec]]
       :cljs [orchestra.core :refer-macros [defn-spec]])
-   [dda.c4k-common.predicate :as cp]))
+   [dda.c4k-common.predicate :as cp]
+   [expound.alpha :as expound]))
 
 
 ;; deprecated functions were moved to dda.c4k-common.predicate
@@ -56,3 +59,54 @@
   [& vs (s/* seq?)]
   (into []
         (apply concat vs)))
+
+(defn usage [name]
+  (str 
+   "usage:
+        
+   " name "{your configuraton file} {your authorization file}"))
+
+(s/def ::options (s/* #{"-h"}))
+(s/def ::filename (s/and string?
+                         #(not (cs/starts-with? % "-"))))
+(s/def ::cmd-args (s/cat :options ::options
+                         :args (s/?
+                                (s/cat :config ::filename
+                                       :auth ::filename))))
+
+(defn invalid-args-msg
+  [name spec args]
+  (s/explain spec args)
+  (println (str "Bad commandline arguments\n" (usage name))))
+
+(defn generate-common [my-config my-auth config-defaults k8s-objects]
+  (let [resulting-config (merge config-defaults my-config my-auth)]
+    (cs/join
+     "\n---\n"
+     (k8s-objects resulting-config))))
+
+(defn main-common [name config-spec? auth-spec? config-defaults k8s-objects cmd-args]
+  (let [parsed-args-cmd (s/conform ::cmd-args cmd-args)]
+    (if (= ::s/invalid parsed-args-cmd)
+      (invalid-args-msg name ::cmd-args cmd-args)
+      (let [{:keys [options args]} parsed-args-cmd
+            {:keys [config auth]} args]
+        (cond
+          (some #(= "-h" %) options)
+          (println usage)
+          :default
+          (let [config-str (slurp config)
+                auth-str (slurp auth)
+                config-edn (edn/read-string config-str)
+                auth-edn (edn/read-string auth-str)
+                config-valid? (s/valid? config-spec? config-edn)
+                auth-valid? (s/valid? auth-spec? auth-edn)]
+            (if (and config-valid? auth-valid?)
+              (println (generate-common config-edn auth-edn config-defaults k8s-objects))
+              (do
+                (when (not config-valid?)
+                  (println
+                   (expound/expound-str config-spec? config-edn {:print-specs? false})))
+                (when (not auth-valid?)
+                  (println
+                   (expound/expound-str auth-spec? auth-edn {:print-specs? false})))))))))))