ubuntu 启动器中添加图标

一个桌面快捷方式是由内含该APP元信息（例如，app的名字，启动命令或者图标位置等）的.desktop文件所表示的。桌面快捷方式文件放置于/usr/share/applications或者~/.local/share/applications处。

[Desktop Entry]
Encoding=UTF-8
Version=1.0                                     #version of an app.
Name[en_US]=yEd                                 #name of an app.
GenericName=GUI Port Scanner                    #longer name of an app.
Exec=node %f          #command used to launch an app.
Terminal=false                                  #whether an app requires to be run in a terminal
Icon[en_US]=/opt/yed-3.11.1/icons/yicon32.png   #location of icon file.
Type=Application                                #type
Categories=Application;Network;Security;        #categories in which this app should be listed.
Comment[en_US]=yEd Graph Editor                 #comment which appears as a tooltip.

MimeType=image/x-foo;