1.解决 epel-release依赖问题 ，执行命令： yum insatll epel-release
2.然后下载nux-dextop-release-0-5.el7.nux.noarch.rpm，网址http://li.nux.ro/download/nux/dextop/el7/x86_64
，切换到下载目录安装执行命令： rpm -ivh nux-dextop-release-0-5.el7.nux.noarch.rpm
3.安装shutter
yum install shutter
4.快捷键设置
