diff --git a/centos/software.md b/centos/software.md
index 413f4a2..a9154c1 100644
--- a/centos/software.md
+++ b/centos/software.md
@@ -2,7 +2,7 @@
 title: 常用软件安装
 description: CentOS中常用软件的安装
 published: true
-date: 2021-08-05T09:04:24.018Z
+date: 2021-08-05T09:05:05.279Z
 tags: centos
 editor: markdown
 dateCreated: 2021-08-03T08:44:11.452Z
@@ -24,10 +24,13 @@ $ yum install -y net-tools.x86_64
 ```
 
 # bash-completion（自动补全）
+1. 安装
 ```bash
 $ yum install -y bash-completion
 ```
 
+2. 退出当前shell，重新登录
+
 # vim
 ```bash
 $ yum install -y vim