diff --git a/Makefile b/Makefile
index 7b3a87e..41d5d2b 100644
--- a/Makefile
+++ b/Makefile
@@ -61,11 +61,11 @@ dist: build-uberjar ## Build and package Clojure service
 
 install: build-jar
 	$(info --------- install library jar ---------)
-	clojure -T:build install
+	clojure -T:build/task install
 
 deploy: build-jar
 	$(info --------- install library jar ---------)
-	clojure -T:build deploy
+	clojure -T:build/task deploy
 
 publish: build-jar
 	$(info --------- Build and Package Clojure lib ---------)
diff --git a/build.clj b/build.clj
index bbcb6a5..96576b8 100644
--- a/build.clj
+++ b/build.clj
@@ -22,6 +22,7 @@
 (ns build
   (:require
    [clojure.tools.build.api :as build-api]
+   [clojure.edn :as edn]
    [clojure.pprint :as pprint]))
 
 ;; ---------------------------------------------------------
diff --git a/src/dda/backup/core.clj b/src/dda/backup/core.clj
new file mode 100644
index 0000000..9f7b290
--- /dev/null
+++ b/src/dda/backup/core.clj
@@ -0,0 +1,15 @@
+(ns dda.backup.core
+  (:require [clojure.spec.alpha :as s]
+            [orchestra.core :refer [defn-spec]]
+            ))
+
+(s/def ::command (s/cat 
+                  :app string?
+                  :params (s/* string?)))
+(s/def ::commands (s/coll-of ::command))
+
+(s/def ::dry-run boolean?)
+(s/def ::debug boolean?)
+
+(def default {:dry-run false
+              :debug false})
\ No newline at end of file
diff --git a/src/dda/backup/infrastructure.clj b/src/dda/backup/infrastructure.clj
new file mode 100644
index 0000000..b1f1c38
--- /dev/null
+++ b/src/dda/backup/infrastructure.clj
@@ -0,0 +1,14 @@
+(ns dda.backup.infrastructure
+  (:require [orchestra.core :refer [defn-spec]]
+            [babashka.tasks :as t]
+            [dda.backup.core :as core]))
+
+(defn-spec execute! nil?
+  [commands ::core/command
+   config any?]
+  (let [{:keys [dry-run debug]} config]
+    (doseq [c commands]
+      (when debug
+        (println c))
+      (when-not dry-run
+        (apply t/shell c)))))
diff --git a/src/dda/backup/management.clj b/src/dda/backup/management.clj
index cad04f1..7cde3aa 100644
--- a/src/dda/backup/management.clj
+++ b/src/dda/backup/management.clj
@@ -2,5 +2,15 @@
   (:require
    [orchestra.core :refer [defn-spec]]
    [clojure.spec.alpha :as s]
-   [dda.build.devops.domain :as domain]
-   [dda.build.infrastructure :as i]))
\ No newline at end of file
+   [dda.backup.core :as core]
+   [dda.backup.management.domain :as domain]
+   [dda.backup.infrastructure :as i]))
+
+(s/def ::config
+  (s/keys :req-un [::domain/restic-repository ::domain/backup-path]
+          :opt-un [::domain/certificate-file ::core/debug ::core/dry-run]))
+
+(defn-spec init! nil?
+  [config ::config]
+  (let [config-w-defaults (merge core/default config)]
+    (i/execute! (domain/init-repo-command config-w-defaults) config-w-defaults)))
\ No newline at end of file
diff --git a/src/dda/backup/management/domain.clj b/src/dda/backup/management/domain.clj
index 5f7015e..b5a4d6a 100644
--- a/src/dda/backup/management/domain.clj
+++ b/src/dda/backup/management/domain.clj
@@ -1,21 +1,37 @@
 (ns dda.backup.management.domain
   (:require
    [orchestra.core :refer [defn-spec]]
-   [clojure.spec.alpha :as s]))
+   [clojure.spec.alpha :as s]
+   [dda.backup.core :as core]))
 
-(s/def ::certificate-file string?)
 (s/def ::restic-repository string?)
-(s/def ::backup-file-path string?)
+(s/def ::backup-path string?)
+(s/def ::certificate-file string?)
+(s/def ::password-file string?)
 
 (s/def ::config
-  (s/keys :req-un [::restic-repository ::backup-file-path]
-          :opt-un [::certificate-file]))
+  (s/keys :req-un [::restic-repository ::backup-path]
+          :opt-un [::certificate-file ::password-file]))
 
-; TODO: specify output better
-(defn-spec init-repo-command seq?
+(defn-spec init-repo-command ::core/commands
   [config ::config]
-  (let [{:keys [certificate-file restic-repository backup-file-path]} config]
-    (if (some? certificate-file)
-      ["restic" "-r" (str restic-repository "/" backup-file-path) "-v" "init" "--cacert" certificate-file]
-      ["restic" "-r" (str restic-repository "/" backup-file-path) "-v" "init"]
-      )))
\ No newline at end of file
+  (let [{:keys [certificate-file password-file restic-repository backup-path]} config]
+    (cond 
+      (some? certificate-file)
+      [ ["restic" "-r" (str restic-repository "/" backup-path) "--cacert" certificate-file "-v" "init"]]
+      (some? password-file)
+      [["restic" "-r" (str restic-repository "/" backup-path) "--password-file" password-file "-v" "init"]]
+      :else
+      [ ["restic" "-r" (str restic-repository "/" backup-path) "-v" "init"]]
+      )))
+
+(defn-spec list-snapshot-command ::core/commands
+  [config ::config]
+  (let [{:keys [certificate-file password-file restic-repository backup-path]} config]
+    (cond
+      (some? certificate-file)
+      [["restic" "-r" (str restic-repository "/" backup-path) "--cacert" certificate-file "-v" "snapshots"]]
+      (some? password-file)
+      [["restic" "-r" (str restic-repository "/" backup-path) "--password-file" password-file "-v" "snapshots"]]
+      :else
+      [["restic" "-r" (str restic-repository "/" backup-path) "-v" "snapshots"]])))
diff --git a/test/dda/backup/core_test.clj b/test/dda/backup/core_test.clj
new file mode 100644
index 0000000..539dc28
--- /dev/null
+++ b/test/dda/backup/core_test.clj
@@ -0,0 +1,16 @@
+(ns dda.backup.core-test
+  (:require
+   [clojure.test :refer [deftest is are testing run-tests]]
+   [clojure.spec.alpha :as s]
+   [clojure.spec.test.alpha :as st]
+   [dda.backup.core :as cut]))
+
+(deftest should-verify-command
+  (is (= {:app "restic", :params ["-r" "repo/dir" "-v" "init" "--cacert" "ca"]}
+         (s/conform ::cut/command ["restic" "-r" "repo/dir" "-v" "init" "--cacert" "ca"]))))
+
+(deftest should-verify-commands
+  (is (= [{:app "ls"}
+          {:app "restic", :params ["-r" "repo/dir" "-v" "init" "--cacert" "ca"]}]
+         (s/conform ::cut/commands [["ls"] 
+                                    ["restic" "-r" "repo/dir" "-v" "init" "--cacert" "ca"]]))))
diff --git a/test/dda/backup/management/domain_test.clj b/test/dda/backup/management/domain_test.clj
index 812fa6e..6d2c6eb 100644
--- a/test/dda/backup/management/domain_test.clj
+++ b/test/dda/backup/management/domain_test.clj
@@ -5,13 +5,26 @@
    [dda.backup.management.domain :as cut]))
 
 (st/instrument `cut/init-repo-command)
+(st/instrument `cut/list-snapshot-command)
 
 (deftest should-calculate-init-repo-command
-  (is (= ["restic" "-r" "repo/dir" "-v" "init" "--cacert" "ca"]
+  (is (= [["restic" "-r" "repo/dir"  "--cacert" "ca" "-v" "init"]]
          (cut/init-repo-command {:certificate-file "ca"
                                  :restic-repository "repo"
-                                 :backup-file-path "dir"})))
-  (is (= ["restic" "-r" "repo/dir" "-v" "init"]
+                                 :backup-path "dir"})))
+  (is (= [["restic" "-r" "repo/dir" "-v" "init"]]
          (cut/init-repo-command {:restic-repository "repo"
-                                 :backup-file-path "dir"})))
-  )
+                                 :backup-path "dir"}))))
+
+(deftest should-calculate-list-snapshot-command
+  (is (= [["restic" "-r" "repo/dir" "--cacert" "ca" "-v" "snapshots"]]
+         (cut/list-snapshot-command {:certificate-file "ca"
+                                     :restic-repository "repo"
+                                     :backup-path "dir"})))
+  (is (= [["restic" "-r" "repo/dir" "--password-file" "password" "-v" "snapshots"]]
+         (cut/list-snapshot-command {:password-file "password"
+                                     :restic-repository "repo"
+                                     :backup-path "dir"})))
+  (is (= [["restic" "-r" "repo/dir" "-v" "snapshots"]]
+         (cut/list-snapshot-command {:restic-repository "repo"
+                                     :backup-path "dir"}))))