CentOS 7卡在开机界面进不去登录界面

查看CentOS7版本信息：

[root@biostacs ~]# lsb_release -a
LSB Version:    :core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch
Distributor ID: CentOS
Description:    CentOS Linux release 7.1.1503 (Core)
Release:        7.1.1503
Codename:       Core

删除Anaconda Python

直接删除 /root/Anaconda2文件夹

找到CentOS7版本对应的软件源

http://mirror.centos.org/centos-7/7/os/x86_64/Packages/

删除环境变量

在 /etc/profile、~/.bashrc里删除

重新安装Python

运行下面命令：

rpm -Uvh --replacepkgs http://mirror.centos.org/centos-7/7/os/x86_64/Packages/python-2.7.5-34.el7.x86_64.rpm

重新安装GNOME桌面

yum groupremove "X Window System" "GNOME Desktop Environment" -y
yum groupinstall "X Window System" "GNOME Desktop Environment" -y

yum update

yum uodate

等待更新完成