Centos7安装桌面视图环境

我最近安装了CentOS 7，当时做的是最没闭简小安装，没有GUI，而现在我想在其中安装一个GUI环境，那么，如何在先前安装的CentOS 7上安装桌面环境而不用重新安装系统呢？

使用yum group 安装的桌面环境大小

yum的用法

[user@sgk_entos7 ]# yum repolist

CentOS 7默认的GNOME桌面以经典模式开始，但如果要使用GNOME Shell，则需要做如下设置：

选项枯裤A：如果使态培用 startx 启动GNOME，请设置如下：

选项B：设置系统图形登录 systemctl set-default graphical.target 并重启系统。系统启动后

一、首先查看系统的运行级别以及是否安装了桌面环境

1、使用命令 runlevel 查看当前的运行级别 ，如图所示

2、使用命令 yum grouplist | more 查看陵亩是否安装了桌面环境的组件，如图所示

二、再次从上面分析的结果看到，当前运行级别是3，而且也没有安装桌面环境的软件。

然后我们使用命令查看一下桌面有哪庆返些桌面环境的软件，尺差森然后装显示出来的软件组件就可以了。例如：

[root@localhost ~]#[root@localhost ~]# yum grouplist | more

Loaded plugins: fastestmirrorSetting up Group ProcessLoading mirror speeds from cached hostfile

* base: mirrors.usc.edu * extras: centos.mirror.ndchost.com *

updates: mirror-centos.hostingswift.com

Installed Groups: E-mail server Security Tools Storage

Availability Tools iSCSI Storage Client

Available Groups:

Additional Development

Backup Client Backup Server

Base CIFS file server

Client management tools

Compatibility libraries

Console internet tools

Debugging Tools

Desktop

Desktop Debugging and Performance Tools

Desktop Platform

Desktop Platform Development

Development tools

Dial-up Networking Support

Directory Client

Directory Server

Eclipse

Emacs

FCoE Storage Client

FTP server

Fonts

General Purpose Desktop

Graphical Administration Tools

Graphics Creation Tools

Hardware monitoring utilities

High Availability

High Availability Management

Identity Management Server

Infiniband Support

Input Methods

Internet Applications

Internet Browser

Java Platform

KDE Desktop

Large Systems Performance

Legacy UNIX compatibility

Legacy X Window System compatibility

Load Balancer

Mainframe Access

Messaging Client Support

MySQL Database client

MySQL Database server

NFS file server

Network Infrastructure Server

Network Storage Server

Network file system client

Networking Tools

Office Suite and Productivity

PHP Support

Performance Tools

Perl Support PostgreSQL

Database client

PostgreSQL Database server

Print Server

Printing client

Remote Desktop Clients

Resilient Storage

Ruby Support

SNMP Support

Scientific support

Server Platform

Server Platform Development

Smart card support

System Management

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