diff --git a/谷歌云开启root账户与密码登录.md b/谷歌云开启root账户与密码登录.md
index 99297fb..c7853d3 100644
--- a/谷歌云开启root账户与密码登录.md
+++ b/谷歌云开启root账户与密码登录.md
@@ -4,24 +4,25 @@
 如下图所示，选择红线标示的项，中文界面，选择对应位置。  
 ![](https://github.com/proxysu/Resources/raw/master/image/googlevpsroot2.png)  
 在打开的网页版ssh登录界面，依次输入以下命令：  
-sudo sed -i 's/PermitRootLogin /#PermitRootLogin /g' /etc/ssh/sshd_config
 
-sudo sed -i 's/PasswordAuthentication /#PasswordAuthentication /g' /etc/ssh/sshd_config
+`sudo sed -i 's/PermitRootLogin /#PermitRootLogin /g' /etc/ssh/sshd_config`
 
-sudo sed -i 's/PermitEmptyPasswords /#PermitEmptyPasswords /g' /etc/ssh/sshd_config
+`sudo sed -i 's/PasswordAuthentication /#PasswordAuthentication /g' /etc/ssh/sshd_config`
 
-sudo echo "PermitRootLogin yes" >> /etc/ssh/sshd_config
+`sudo sed -i 's/PermitEmptyPasswords /#PermitEmptyPasswords /g' /etc/ssh/sshd_config`
 
-sudo echo "PasswordAuthentication yes" >> /etc/ssh/sshd_config
+`sudo echo "PermitRootLogin yes" >> /etc/ssh/sshd_config`
 
-sudo "PermitEmptyPasswords no" >> /etc/ssh/sshd_config
+`sudo echo "PasswordAuthentication yes" >> /etc/ssh/sshd_config`
 
-sudo systemctl restart sshd
+`sudo "PermitEmptyPasswords no" >> /etc/ssh/sshd_config`
+
+`sudo systemctl restart sshd`
 
 生成随机密码：
 
-cat /dev/urandom | tr -dc '_A-Z#\-+=a-z(0-9%^>)]{<|' | head -c 20 ; echo ''
+`cat /dev/urandom | tr -dc '_A-Z#\-+=a-z(0-9%^>)]{<|' | head -c 20 ; echo ''`
 
-sudo passwd root
+`sudo passwd root`
 
 输入两次上面生成的随机密码，这个随机密码要保存好。这个就是登录root账户的密码。
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