diff --git a/Software/OperatingSystem/Linux/Ubuntu/Ubuntu_初始配置.md b/Software/OperatingSystem/Linux/Ubuntu/Ubuntu_初始配置.md
index b68cc46..a15856c 100644
--- a/Software/OperatingSystem/Linux/Ubuntu/Ubuntu_初始配置.md
+++ b/Software/OperatingSystem/Linux/Ubuntu/Ubuntu_初始配置.md
@@ -26,13 +26,17 @@ deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted
 
 ## 安装 Gnome3
 
-    sudo apt-get install gnome gnome-audio gnome-shell gnome-terminal gnome-themes-extra gnome-tweaks gnome-tweak-tool gnome-icon-theme gnome-control-center gnome-colors gnome-color-chooser gnome-color-manager gnome-calendar gnome-calculator gnome-backgrounds gnome-alsamixer gnome-screensaver
+```sh
+sudo apt-get install gnome gnome-audio gnome-shell gnome-terminal gnome-themes-extra gnome-tweaks gnome-tweak-tool gnome-icon-theme gnome-control-center gnome-colors gnome-color-chooser gnome-color-manager gnome-calendar gnome-calculator gnome-backgrounds gnome-alsamixer gnome-screensaver
+```
 
 ### 安装主题
 
 示例如下：  
 
-    sudo apt-get install breeze-icon-theme breeze-cursor-theme breeze-gtk-theme
+```sh
+sudo apt-get install breeze-icon-theme breeze-cursor-theme breeze-gtk-theme
+```
 
 之后在 gnome tweak tool 中可更换主题。  
 
@@ -40,7 +44,9 @@ deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted
 
 Gnome3 默认支持 ibus 输入法，安装方法如下：  
 
-    sudo apt-get install ibus-pinyin ibus-sunpinyin ibus-gtk ibus-gtk3 ibus-qt4
+```sh
+sudo apt-get install ibus-pinyin ibus-sunpinyin ibus-gtk ibus-gtk3 ibus-qt4
+```
 
 不安装 ibus-gtk、ibus-gtk3 和 ibus-qt4 的话将不会产生光标跟随效果，输入法待选字都在左下角。  
 
@@ -50,11 +56,11 @@ Gnome3 默认支持 ibus 输入法，安装方法如下：
 
 默认在安装 Gnome3 时会弹出登陆管理器切换界面，如需自行修改的话可使用如下命令：  
 
-    sudo dpkg-reconfigure gdm
-
-或
-
-    sudo dpkg-reconfigure lightdm
+```sh
+sudo dpkg-reconfigure gdm
+# 或
+sudo dpkg-reconfigure lightdm
+```
 
 ### 切换主目录中文件夹名
 
@@ -73,31 +79,43 @@ XDG_VIDEOS_DIR="$HOME/Videos"
 
 之后：  
 
-	gsettings set org.blueman.transfer shared-path '/home/<user name>/Downloads'
+```sh
+gsettings set org.blueman.transfer shared-path '/home/<user name>/Downloads'
+```
 
 或通过：  
 
-	sudo blueman-services
+```sh
+sudo blueman-services
+```
 
 重新配置，否则重启会提示：  
 
-	Configured directory for incoming files does not exist
+```sh
+Configured directory for incoming files does not exist
+```
 
 ## 查看已安装工具包
 
-    dpkg -l
+```sh
+dpkg -l
+```
 
 可配合 grep 工具使用。  
 
 ## 安装开发工具
 
-    $ sudo apt-get install build-essential
-    $ sudo apt-get install global openssl gcc git make gnu-efi libssl-dev libpciaccess-dev uuid-dev libsystemd-dev libevent-dev libxml2-dev libusb-1.0-0-dev python3 python3-pip libblkid-dev e2fslibs-dev minicom gtkterm parted gparted tmux
-    $ sudo pip3 install kconfiglib
+```sh
+sudo apt-get install build-essential
+sudo apt-get install global openssl gcc git make gnu-efi libssl-dev libpciaccess-dev uuid-dev libsystemd-dev libevent-dev libxml2-dev libusb-1.0-0-dev python3 python3-pip libblkid-dev e2fslibs-dev minicom gtkterm parted gparted tmux
+sudo pip3 install kconfiglib
+```
 
 ## 提升权限
 
 普通用户可能无法访问某些设备，需要提升权限：  
 
-    gpasswd --add <user name> dialout
-    groups <user name>
+```sh
+gpasswd --add <user name> dialout
+groups <user name>
+```