diff --git a/notes/installation/hadoop单机版本环境搭建.md b/notes/installation/hadoop单机版本环境搭建.md
index e434598..cde0777 100644
--- a/notes/installation/hadoop单机版本环境搭建.md
+++ b/notes/installation/hadoop单机版本环境搭建.md
@@ -86,11 +86,20 @@ ssh-keygen -t rsa
 
 #### 3.3 把路径添加到环境变量
 
+```shell
+# vi /etc/profile
+```
+
 ```
 export HADOOP_HOME=/usr/app/hadoop-2.6.0-cdh5.15.2
 export  PATH=${HADOOP_HOME}/bin:$PATH
 ```
 
+```shell
+# 执行source命令,使得配置立即生效
+# source /etc/profile
+```
+
 
 
 #### 3.4 修改Hadoop相关配置文件