问题1：怎样添加图标

cd /usr/share/applications

vi Wechat.deskdop

[Desktop Entry]

Type=Application

Name=Wechat

GenericName=Wechat

Comment=Wechat:Communication

Exec=/home/wechat/electronic-wechat

Icon=/home/wechat/wechat.jpg

Terminal=false

StartupNotify=true

Categories=Application;Office;