yum安裝、升級與移除

1. 安裝/升級選項
   

   [root@www ~]# yum command [packages]
   command:
     install  :安裝
     reinstall:重新安裝
     update   :升級，若要整個系統都升級，後不接套件
     remove   :移除
   

2. 安裝
   

   [root@demo ~]# yum install cjkuni-ukai-fonts
   Setting up Install Process
   Resolving Dependencies
   --> Running transaction check
   ---> Package cjkuni-ukai-fonts.noarch 0:0.2.20080216.1-34.el6 set to be updated
   --> Finished Dependency Resolution
   
   Dependencies Resolved
   
   ==================================================================================================
    Package                    Arch            Version                           Repository     Size
   ==================================================================================================
   Installing:
    cjkuni-ukai-fonts          noarch          0.2.20080216.1-34.el6             rhel          9.4 M
   
   Transaction Summary
   ==================================================================================================
   Install       1 Package(s)
   Upgrade       0 Package(s)
   
   Total download size: 9.4 M
   Installed size: 17 M
   Is this ok [y/N]: y
   Downloading Packages:
   cjkuni-ukai-fonts-0.2.20080216.1-34.el6.noarch.rpm                         | 9.4 MB     00:41     
   Running rpm_check_debug
   Running Transaction Test
   Transaction Test Succeeded
   Running Transaction
     Installing     : cjkuni-ukai-fonts-0.2.20080216.1-34.el6.noarch                             1/1 
   
   Installed:
     cjkuni-ukai-fonts.noarch 0:0.2.20080216.1-34.el6                                                
   
   Complete!
   

3. 移除功能：yum [remove] 軟體
   

   [root@demo ~]# yum remove cjkuni-ukai-fonts
   Resolving Dependencies
   --> Running transaction check
   ---> Package cjkuni-ukai-fonts.noarch 0:0.2.20080216.1-34.el6 set to be erased
   --> Finished Dependency Resolution
   
   Dependencies Resolved
   
   ===========================================================================================
    Package               Arch      Version                    Repository            Size
   ===========================================================================================
   Removing:
    cjkuni-ukai-fonts     noarch    0.2.20080216.1-34.el6      @base/6Server         17 M
   
   Transaction Summary
   ===========================================================================================
   Remove        1 Package(s)
   Reinstall     0 Package(s)
   Downgrade     0 Package(s)
   
   Is this ok [y/N]: y
   Downloading Packages:
   Running rpm_check_debug
   Running Transaction Test
   Transaction Test Succeeded
   Running Transaction
   Warning: RPMDB altered outside of yum.
   kernel-firmware-2.6.32-71.29.1.el6.noarch is a duplicate with kernel-firmware-2.6.32-71.el6.noarch
   rhn-check-1.0.0-38.el6.noarch has missing requires of yum-rhn-plugin >= ('0', '0.5.3', '30')
     Erasing        : cjkuni-ukai-fonts-0.2.20080216.1-34.el6.noarch                             1/1 
   
   Removed:
     cjkuni-ukai-fonts.noarch 0:0.2.20080216.1-34.el6                                                
   
   Complete!