diff --git a/docs/TechnicalTopics/Shell.md b/docs/TechnicalTopics/Shell.md
index 4f80474..f90e6a9 100644
--- a/docs/TechnicalTopics/Shell.md
+++ b/docs/TechnicalTopics/Shell.md
@@ -13,3 +13,12 @@ netstat -aon|findstr "10089"
 # 杀死进程
 taskkill /f /pid  10000
 ```
+
+## 磁盘
+
+### 磁盘撑满排查
+
+```sh
+# 查看根路径下各目录大小, 限制一层目录
+du -h --max-depth=1 /
+```