yum groupinstall "Desktop" -y     --安裝圖形化介面
yum groupremove "Desktop" -y    --解除安裝圖形化介面

一、配置yum庫

Virtualbox下的虛擬光碟機位於/dev/sr0，所以，向virtualbox載入RHEL6.1的映象後，就可以配置yum庫了
1.掛載映象
[[email protected] ~]#  mkdir /media/rhel
[[email protected] ~]#  mount -o loop /dev/sr0 /media/rhel
 
2.使映象能開機自動掛載
在/etc/fstab的最下面新增下面一句
[

[email protected] ~]#  vi /etc/fstab
/dev/sr0                /media/rhel            iso9660       ro,loop         0 0
 
3.新建一個本地repo檔案
紫色的部分可以不要新增，只要黑體那部分就行了。
[[email protected] ~]#  vi /etc/yum.repos.d/local.repo

[Server]
name=Server
baseurl=file:///media/rhel/Server
enabled=1
gpgcheck=0

[HighAvailability]
name=HighAvailability
baseurl=file:///media/rhel/HighAvailability
enabled=1
gpgcheck=0

[LoadBalancer]
name=LoadBalancer
baseurl=file:///media/rhel/LoadBalancer
enabled=1
gpgcheck=0
 
二、安裝桌面
 
1.檢查軟體組
檢視一下桌面在哪個軟體組裡
[[email protected] ~]#  yum grouplist
Loaded plugins: refresh-packagekit
Setting up Group Process
HighAvailability/group_gz                                | 4.0 kB     00:00 ...
LoadBalancer/group_gz                                    | 2.1 kB     00:00 ...
Installed Groups:
   Additional Development
   Base
   Console internet tools
   Desktop
   Desktop Debugging and Performance Tools
   Dial-up Networking Support
   E-mail server
   FCoE Storage Client
   FTP server
   ......

2.安裝桌面
桌面在軟體組desktop中，這和rhel5不太一樣，rhel5裡面好像為gnome
那麼就開始安裝桌面吧，但之前必須先安裝Xwindow軟體組
[

[email protected] ~]# yum groupinstall “X Window System”
[[email protected] ~]# yum groupinstall “Desktop”
3. 雖然到此就可以啟動桌面了，但是linux建議不要讓root使用者直接登入圖形介面
    所以，我們最好再建立一個普通使用者
[[email protected] ~]#  useradd kevin
建立kevin的密碼
[[email protected] ~]#  passwd kevin
4.啟動X：
首先切換到普通使用者
 [[email protected] ~]#  su - kevin
 [[email protected] ~] $ startx
5.更改啟動模式
這時如果重啟的話還是會直接進入命令介面，所以必須調整開機進入桌面還是命令介面
[[email protected] ~]#vim /etc/inittab
# System initialization is started by /etc/init/rcS.conf
#
# Individual runlevels are started by /etc/init/rc.conf
#
# Ctrl-Alt-Delete is handled by /etc/init/control-alt-delete.conf
#
# Terminal gettys are handled by /etc/init/tty.conf and /etc/init/serial.conf,
# with configuration in /etc/sysconfig/init.
#
# For information on how to write upstart event handlers, or how
# upstart works, see init(5), init(8), and initctl(8).
#
# Default runlevel. The runlevels used are:
#   0 - halt (Do NOT set initdefault to this)
#   1 - Single user mode
#   2 - Multiuser, without NFS (The same as 3, if you do not have networking)
#   3 - Full multiuser mode
#   4 - unused
#   5 - X11
#   6 - reboot (Do NOT set initdefault to this)
#
id:3:initdefault:
 將上面紅字部分的  3改成5
 3為命令列介面   5為X window圖形介面

5.刪除redhat訂閱：
rhel6.1新增了一個redhat訂閱，沒有用，可以刪除
[[email protected] ~]# yum remove subscription*
6.安裝桌面右鍵終端：
[[email protected] ~]# yum install nautilus-open-terminal