在/usr/share/applications和/usr/share/app-install/desktop寻找需要的图标，没有就自己做一个
eclipse的图标
[Desktop Entry] Version=1.0 Name=eclipse Exec=/home/common/software/eclipse/eclipse Terminal=false Icon=/home/common/software/eclipse/eclipse.png Type=Application Categories=Development
sublimetext的图标
为了使得sublime能修改root的文件，安装gksu，然后在Exec前面加上gksu
[Desktop Entry]
Name=SublimeText2
Type=Application
Terminal=false
Comment=Edit text files
Exec=/home/common/software/SublimeText2/sublime_text %F
Icon=/home/common/software/SublimeText2/sublime_text.png
注意末尾不要有空格
docky添加的图标的目录在
~/.local/share/applications