diff --git a/pkg_list.service b/pkg_list.service
new file mode 100644
index 0000000..ad84fc7
--- /dev/null
+++ b/pkg_list.service
@@ -0,0 +1,6 @@
+[Unit]
+Description = get installed packages list
+
+[Service]
+Type = oneshot
+ExecStart = {{ pkg_list_command }} | sort > /root/pkg.list
\ No newline at end of file
diff --git a/pkg_list.timer b/pkg_list.timer
new file mode 100644
index 0000000..59c2793
--- /dev/null
+++ b/pkg_list.timer
@@ -0,0 +1,6 @@
+[Unit]
+Description= get weekly package list
+[Timer]
+OnCalendar=Mon 05:00:00
+[Install]
+WantedBy=multi-user.target