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@kvm8 ~]# yum install google-noto-cjk-fonts-common.noarch
   Last metadata expiration check: 1:25:24 ago on Fri 22 Oct 2021 03:38:02 PM CST.
   Dependencies resolved.
   ================================================================================
    Package                          Arch       Version              Repo     Size
   ================================================================================
   Installing:
    google-noto-cjk-fonts-common     noarch     20190416-1.el8       App      20 k
   
   Transaction Summary
   ================================================================================
   Install  1 Package
   
   Total download size: 20 k
   Installed size: 29 k
   Is this ok [y/N]: y
   Downloading Packages:
   google-noto-cjk-fonts-common-20190416-1.el8.noa 213 kB/s |  20 kB     00:00
   --------------------------------------------------------------------------------
   Total                                           206 kB/s |  20 kB     00:00
   Running transaction check
   Transaction check succeeded.
   Running transaction test
   Transaction test succeeded.
   Running transaction
     Preparing        :                                                        1/1
     Installing       : google-noto-cjk-fonts-common-20190416-1.el8.noarch     1/1
     Verifying        : google-noto-cjk-fonts-common-20190416-1.el8.noarch     1/1
   Installed products updated.
   
   Installed:
     google-noto-cjk-fonts-common-20190416-1.el8.noarch
   
   Complete!
   

3. 移除功能：yum [remove] 軟體

   [root@kvm8 ~]# yum remove google-noto-cjk-fonts-common.noarch
   Dependencies resolved.
   ================================================================================
    Package                          Arch       Version             Repo      Size
   ================================================================================
   Removing:
    google-noto-cjk-fonts-common     noarch     20190416-1.el8      @App      29 k
   
   Transaction Summary
   ================================================================================
   Remove  1 Package
   
   Freed space: 29 k
   Is this ok [y/N]: y
   Running transaction check
   Transaction check succeeded.
   Running transaction test
   Transaction test succeeded.
   Running transaction
     Preparing        :                                                        1/1
     Erasing          : google-noto-cjk-fonts-common-20190416-1.el8.noarch     1/1
     Verifying        : google-noto-cjk-fonts-common-20190416-1.el8.noarch     1/1
   Installed products updated.
   
   Removed:
     google-noto-cjk-fonts-common-20190416-1.el8.noarch
   
   Complete!