diff --git a/share/actionsmap.yml b/share/actionsmap.yml
index 58787790c..e1de66bc8 100644
--- a/share/actionsmap.yml
+++ b/share/actionsmap.yml
@@ -954,6 +954,12 @@ app:
                     help: Delete the key
                     action: store_true
 
+        ### app_shell()
+        shell:
+            action_help: Open an interactive shell with the app environment already loaded
+            arguments:
+                app:
+                    help: App ID
 
         ### app_register_url()
         register-url:
diff --git a/src/app.py b/src/app.py
index 2eb201a81..0db33a373 100644
--- a/src/app.py
+++ b/src/app.py
@@ -1645,6 +1645,26 @@ def app_setting(app, key, value=None, delete=False):
     _set_app_settings(app, app_settings)
 
 
+def app_shell(app):
+    """
+    Open an interactive shell with the app environment already loaded
+
+    Keyword argument:
+        app -- App ID
+
+    """
+    app_settings = _get_app_settings(app) or {}
+
+   #TODO init a env_dict
+   #TODO load the app's environment, parsed from:
+   #TODO   - its settings (phpversion, ...)
+   #TODO   - its service configuration (PATH, NodeJS production mode...)
+   #TODO     this one could be performed in Bash, directly after initiating the subprocess:
+   #TODO     - "Environment" clause: `systemctl show $app.service -p "Environment" --value`
+   #TODO     - Source "EnvironmentFile" clauses
+   #TODO
+   #TODO find out how to open an interactive Bash shell from Python
+
 def app_register_url(app, domain, path):
     """
     Book/register a web path for a given app