CentOS 7 是centos的最新版，高度可定制化的系统，用起来非常方便

以下是根据需要进行的私人定制

一、去除顶部和底部panel

隐藏顶部panel

1、/usr/share/gnome-shell/modes/classic.json修改panel的左中右都为空

         "panel":{ "left": [],

               "center": [],

               "right": []

             }

2、/usr/share/gnome-shell/theme/gnome-classic.css中，修改

         #panel {

    background-color: #e9e9e9;

    background-gradient-direction: vertical;

    background-gradient-end: #d0d0d0;

    border-top-color: #666; /* we don't supportnon-uniform border-colors and

                               use the top bordercolor for any border, so we

                               need to set iteven if all we want is a bottom

                               border */

    border-bottom: 1px solid #666;

    app-icon-bottom-clip: 0px;

     color: transparent;

     /* hrm, still no multipoint gradients

      background-image: linear-gradient(left,rgba(255, 255, 255, 0), 

      rgba(255, 255, 255, 1) 50%，rgba(255, 255, 255, 0)) !important;*/

   }       

3、/usr/share/gnome-shell/theme/gnome-shell.css中，修改

  #panel {

    background-color:transparent;

    font-weight: bold;

    height: 0px;

   }

 .panel-logo-icon {

  padding-right: .4em;

  icon-size: 1px;

  }

二、隐藏或删除底部panel

1、删除文件夹

    /usr/share/gnome-shell/extensions/window-list@gnome-shell-extensions.gcampax.github.com

三、屏蔽super键

super键的作用：显示窗口的列表和导航，这个键是非常酷的，但是如果，出于私人定制的目的，需要隐藏系统的原有界面，就需要屏蔽这个快捷键，

 具体做法是修改/usr/share/gnome-shell/js/ui/main.js

  屏蔽含有overlay-key的那两句，重启gnome-shell或者直接重启，ok！