diff --git a/Software/Applications/SSH/Linux_SSH_服务的安装和使用.md b/Software/Applications/SSH/Linux_SSH_服务的安装和使用.md
index d18cfff..92fe6cf 100644
--- a/Software/Applications/SSH/Linux_SSH_服务的安装和使用.md
+++ b/Software/Applications/SSH/Linux_SSH_服务的安装和使用.md
@@ -15,9 +15,9 @@ published:   true
 
 ```bash
 # Ubuntu
-apt-get install openssh-server
+sudo apt install openssh-server
 # Manjaro
-pacman -S openssh
+sudo pacman -S openssh
 ```
 
 ## 开启 SSH 服务
@@ -122,19 +122,19 @@ UsePAM yes
 
 ```bash
 # 开机自运行
-systemctl enable sshd.service
+sudo systemctl enable sshd.service
 # 启动 sshd 服务
-systemctl start sshd.service
+sudo systemctl start sshd.service
 # 查看 sshd 服务状态
-systemctl status sshd.service
+sudo systemctl status sshd.service
 # 或（ubuntu12）
-/etc/init.d/ssh restart
+sudo /etc/init.d/ssh restart
 ```
 
 如果没有 systemd，可以使用如下命令：
 
 ```bash
-service ssh start
+sudo service ssh start
 ```
 
 ## SSH 登陆