diff --git a/product/en/docs-mogdb/v2.1/toc.md b/product/en/docs-mogdb/v2.1/toc.md
index 9bcede67e3b87949a7aa02b9f74dc2d428121be9..8893c3069221595ca04748495ad5ced0a464d66a 100644
--- a/product/en/docs-mogdb/v2.1/toc.md
+++ b/product/en/docs-mogdb/v2.1/toc.md
@@ -320,7 +320,7 @@
   + [Stored Procedure](/developer-guide/1-1-stored-procedure.md)
   + [User Defined Functions](/developer-guide/user-defined-functions.md)
   + PL/pgSQL-SQL Procedural Language
-    + [Overview of PL/pgSQL Functions](/developer-guide/plpgsql/1-1-plpgsql-overview)
+    + [Overview of PL/pgSQL Functions](/developer-guide/plpgsql/1-1-plpgsql-overview.md)
     + [Data Types](/developer-guide/plpgsql/1-2-data-types.md)
     + [Data Type Conversion](/developer-guide/plpgsql/1-3-data-type-conversion.md)
     + [Arrays and Records](/developer-guide/plpgsql/1-4-arrays-and-records.md)
diff --git a/product/en/docs-mogdb/v2.1/toc_dev.md b/product/en/docs-mogdb/v2.1/toc_dev.md
index 837b9e4caac3016e780970211172d5a055d21f65..dcb7e6a2c1d0ab1154b4290862008467b24218b8 100644
--- a/product/en/docs-mogdb/v2.1/toc_dev.md
+++ b/product/en/docs-mogdb/v2.1/toc_dev.md
@@ -149,7 +149,7 @@
 + [Stored Procedure](/developer-guide/1-1-stored-procedure.md)
 + [User Defined Functions](/developer-guide/user-defined-functions.md)
 + PL/pgSQL-SQL Procedural Language
-  + [Overview of PL/pgSQL Functions](/developer-guide/plpgsql/1-1-plpgsql-overview)
+  + [Overview of PL/pgSQL Functions](/developer-guide/plpgsql/1-1-plpgsql-overview.md)
   + [Data Types](/developer-guide/plpgsql/1-2-data-types.md)
   + [Data Type Conversion](/developer-guide/plpgsql/1-3-data-type-conversion.md)
   + [Arrays and Records](/developer-guide/plpgsql/1-4-arrays-and-records.md)
diff --git a/product/zh/docs-mogdb/v2.1/installation-guide/simplified-installation-process/1-installation-preparation.md b/product/zh/docs-mogdb/v2.1/installation-guide/simplified-installation-process/1-installation-preparation.md
index b08de5f63956290ca9879faa49b63a570eab0bf9..ac365fea873b9e5159b823c22e3bfd487062dd8d 100644
--- a/product/zh/docs-mogdb/v2.1/installation-guide/simplified-installation-process/1-installation-preparation.md
+++ b/product/zh/docs-mogdb/v2.1/installation-guide/simplified-installation-process/1-installation-preparation.md
@@ -213,7 +213,7 @@ vim /etc/profile
 2. 使用如下命令将各数据库节点/usr/share/zoneinfo/目录下的时区文件拷贝为/etc/localtime文件。 <a id="2"></a>
 
    ```bash
-   cp /usr/share/zoneinfo/$地区/$时区/etc/localtime
+   cp /usr/share/zoneinfo/$地区/$时区 /etc/localtime
    ```
 
     > ![img](https://cdn-mogdb.enmotech.com/docs-media/icon/icon-note.gif) **说明：**
diff --git a/product/zh/docs-mogdb/v2.1/installation-guide/standard-installation/3-modifying-os-configuration.md b/product/zh/docs-mogdb/v2.1/installation-guide/standard-installation/3-modifying-os-configuration.md
index 239b4cd7c0a0c0034c81c8fcc5ab4e6241c76401..9749e9439ef63e77feabb98c71cf8dace1c54dda 100644
--- a/product/zh/docs-mogdb/v2.1/installation-guide/standard-installation/3-modifying-os-configuration.md
+++ b/product/zh/docs-mogdb/v2.1/installation-guide/standard-installation/3-modifying-os-configuration.md
@@ -79,7 +79,7 @@ vim /etc/profile
 将各数据库节点的时区设置为相同时区，可以将/usr/share/zoneinfo/目录下的时区文件拷贝为/etc/localtime文件。
 
 ```
-cp /usr/share/zoneinfo/$地区/$时区/etc/localtime
+cp /usr/share/zoneinfo/$地区/$时区 /etc/localtime
 ```
 
 > ![img](https://cdn-mogdb.enmotech.com/docs-media/icon/icon-note.gif) **说明：**
diff --git a/product/zh/docs-mogdb/v2.1/toc.md b/product/zh/docs-mogdb/v2.1/toc.md
index 8e4fed1d687a00fde054983426ee2aa053a9f26a..1cb5e67f9ddc92d012d20df803b478c4e48ff105 100644
--- a/product/zh/docs-mogdb/v2.1/toc.md
+++ b/product/zh/docs-mogdb/v2.1/toc.md
@@ -322,7 +322,7 @@
   + [存储过程](/developer-guide/1-1-stored-procedure.md)
   + [用户自定义函数](/developer-guide/user-defined-functions.md)
   + PL/pgSQL-SQL过程语言
-    + [PL/pgSQL语言函数介绍](/developer-guide/plpgsql/1-1-plpgsql-overview)
+    + [PL/pgSQL语言函数介绍](/developer-guide/plpgsql/1-1-plpgsql-overview.md)
     + [数据类型](/developer-guide/plpgsql/1-2-data-types.md)
     + [数据类型转换](/developer-guide/plpgsql/1-3-data-type-conversion.md)
     + [数组和record](/developer-guide/plpgsql/1-4-arrays-and-records.md)
diff --git a/product/zh/docs-mogdb/v2.1/toc_dev.md b/product/zh/docs-mogdb/v2.1/toc_dev.md
index eccc5f5d60335c5a06af573bafd8331829f4198c..2db89ed3028813b3a03f19f6d5224af16e7c0be2 100644
--- a/product/zh/docs-mogdb/v2.1/toc_dev.md
+++ b/product/zh/docs-mogdb/v2.1/toc_dev.md
@@ -149,7 +149,7 @@
 + [存储过程](/developer-guide/1-1-stored-procedure.md)
 + [用户自定义函数](/developer-guide/user-defined-functions.md)
 + PL/pgSQL-SQL过程语言
-  + [PL/pgSQL语言函数介绍](/developer-guide/plpgsql/1-1-plpgsql-overview)
+  + [PL/pgSQL语言函数介绍](/developer-guide/plpgsql/1-1-plpgsql-overview.md)
   + [数据类型](/developer-guide/plpgsql/1-2-data-types.md)
   + [数据类型转换](/developer-guide/plpgsql/1-3-data-type-conversion.md)
   + [数组和record](/developer-guide/plpgsql/1-4-arrays-and-records.md)