diff --git a/Software/Applications/VirtualBox/Virtualbox_in_Linux_使用帮助.md b/Software/Applications/VirtualBox/Virtualbox_in_Linux_使用帮助.md
index abcc844..8228f2d 100644
--- a/Software/Applications/VirtualBox/Virtualbox_in_Linux_使用帮助.md
+++ b/Software/Applications/VirtualBox/Virtualbox_in_Linux_使用帮助.md
@@ -21,9 +21,9 @@ yaourt -S virtualbox-ext-oracle
 
 ```bash
 # Ubuntu
-adduser <user name> vboxsf
+sudo adduser <user name> vboxsf
 # Manjaro
-gpasswd --add <user name> vboxsf
+sudo gpasswd --add <user name> vboxsf
 ```
 
 ## 3.USB 功能设置
@@ -36,9 +36,9 @@ gpasswd --add <user name> vboxsf
 
 ```bash
 # Ubuntu
-adduser <user name> vboxusers
+sudo adduser <user name> vboxusers
 # Manjaro
-gpasswd --add <user name> vboxusers
+sudo gpasswd --add <user name> vboxusers
 ```
 
 然后注销或重启。