很多时候我们在安装OS的时候可能默认选择的最小化安装(Minimal Install)，是没有图形化界面的。后面又想安装GUI图形化。在rhel7 平台上可以通过如下命令实现图形化安装。

查看当前可用的安装组

[root@361way mnt]# yum group list

Available environment groups:

Minimal Install

Infrastructure Server

File and Print Server

Basic Web Server

Virtualization Host

Server with GUI

Available Groups:

Compatibility Libraries

Console Internet Tools

Development Tools

Graphical Administration Tools

Legacy UNIX Compatibility

Scientific Support

Security Tools

Smart Card Support

System Administration Tools

System Management

Done

安装图形化界面

[root@361way mnt]#yum -y groupinstall "Server with GUI"

...

Complete!

查看已经安装详情

[root@361way mnt]# show-installed

WARNING: The following groups contain packages not found in the repositories:

XXX base

yum-plugin-security

XXX core

ql2100-firmware

ql23xx-firmware

ql2200-firmware

bfa-firmware

XXX gnome-desktop

unoconv

polkit-gnome

gvfs-obexftp

@base

-yum-plugin-security

@compat-libraries

@core

-bfa-firmware

-ql2100-firmware

-ql2200-firmware

-ql23xx-firmware

@development

@dial-up

@fonts

@gnome-desktop

-gvfs-obexftp

-polkit-gnome

-unoconv

@guest-agents

@guest-desktop-agents

@input-methods

@internet-browser

@multimedia

@print-client

@x11

# Others

grub2

# 1255 package names, 246 leaves

# 14 groups, 3 leftovers, 8 excludes

# 29 lines

show-installed是一个用python写的命令，该命令会去调用yum查看当前已安装的软件组和软件包。

启用图形界面并设置默认启动

[root@361way mnt]# startx

[root@361way mnt]#systemctl get-default

multi-user.target

[root@361way mnt]#systemctl set-default graphical.target

rm '/etc/systemd/system/default.target'

ln -s '/usr/lib/systemd/system/graphical.target' '/etc/systemd/system/default.target'

[root@361way mnt]#systemctl get-default

graphical.target

[root@361way mnt]#reboot