diff --git a/user-group.md b/user-group.md
index 2d68384..3cb02ab 100644
--- a/user-group.md
+++ b/user-group.md
@@ -51,4 +51,28 @@
 
 ```
 
+```
+
+#### sudo 命令
+
+```
+
+```
+
+#### su 命令
+
+```
+
+```
+
+#### whoami 命令
+
+```
+
+```
+
+#### id 命令
+
+```
+
 ```
\ No newline at end of file