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 ~]# dnf install bzip2
   Last metadata expiration check: 0:01:07 ago on Tue 04 Oct 2022 11:53:21 AM CST.
   Dependencies resolved.
   =================================================================================
    Package         Architecture     Version                 Repository        Size
   =================================================================================
   Installing:
    bzip2           x86_64           1.0.8-8.el9             BaseOS            52 k
   
   Transaction Summary
   =================================================================================
   Install  1 Package
   
   Total download size: 52 k
   Installed size: 94 k
   Is this ok [y/N]: y
   Downloading Packages:
   bzip2-1.0.8-8.el9.x86_64.rpm                     721 kB/s |  52 kB     00:00
   ---------------------------------------------------------------------------------
   Total                                            379 kB/s |  52 kB     00:00
   Running transaction check
   Transaction check succeeded.
   Running transaction test
   Transaction test succeeded.
   Running transaction
     Preparing        :                                                         1/1
     Installing       : bzip2-1.0.8-8.el9.x86_64                                1/1
     Running scriptlet: bzip2-1.0.8-8.el9.x86_64                                1/1
     Verifying        : bzip2-1.0.8-8.el9.x86_64                                1/1
   
   Installed:
     bzip2-1.0.8-8.el9.x86_64
   
   Complete!
   

3. 移除功能：yum [remove] 軟體

   [root@kvm8 ~]# dnf remove bzip2
   Dependencies resolved.
   =================================================================================
    Package         Architecture     Version                Repository         Size
   =================================================================================
   Removing:
    bzip2           x86_64           1.0.8-8.el9            @BaseOS            94 k
   
   Transaction Summary
   =================================================================================
   Remove  1 Package
   
   Freed space: 94 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          : bzip2-1.0.8-8.el9.x86_64                                1/1
     Running scriptlet: bzip2-1.0.8-8.el9.x86_64                                1/1
     Verifying        : bzip2-1.0.8-8.el9.x86_64                                1/1
   
   Removed:
     bzip2-1.0.8-8.el9.x86_64
   
   Complete!