diff --git a/README.md b/README.md
index 257b30a..00fa9ee 100644
--- a/README.md
+++ b/README.md
@@ -141,6 +141,11 @@ Passing an encoding
 http://localhost:8888/#encoding=gbk
 ```
 
+Passing a command
+```bash
+http://localhost:8888/?command=pwd
+```
+
 ### Use Docker
 
 Start up the app
diff --git a/README.rst b/README.rst
index 51c089c..7d9dfd5 100644
--- a/README.rst
+++ b/README.rst
@@ -154,6 +154,12 @@ Passing an encoding
 
     http://localhost:8888/#encoding=gbk
 
+Passing a command
+
+.. code:: bash
+
+    http://localhost:8888/?command=pwd
+
 Use Docker
 ~~~~~~~~~~