diff --git a/setup.sh b/setup.sh
new file mode 100644
index 0000000..0fd8175
--- /dev/null
+++ b/setup.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# 创建 testgroup
+groupadd testgroup
+
+# 创建 testuser
+useradd testuser
+
+# 将用户加入组，即更改用户属性
+usermod -aG testgroup testuser
+
+# 验证
+id testuser