yum快速入门-为yum添加常用插件及rpmforge安装源

yum本身比较简陋，但是可以通过增加插件及yum安装源来增强，以方便使用。

 

【常用插件】

yum-fastestmirror          #自动选择最快的yum源

yum-priorities                #多yum源下优先级支持

yum-downloadonly        #只下载rpm包而不安装

【yum安装源】 RPMForge( http://pkgs.repoforge.org)拥有4000多种CentOS的软件包，被CentOS社区认为是最安全也是最稳定的一个软件仓库。

 

 【使用yum-install.sh脚本自动安装插件及rpmforge源】

    
      

     
       #!/bin/sh
#使用： ./yum-install.sh

     
       

     
        
     
       

     
       #
     
       安装必要插件
     
       

     
       yum install 
     
       -
     
       y yum
     
       -
     
       fastestmirror
yum install 
     
       -
     
       y yum
     
       -
     
       priorities

     
       #
     
       vi /etc/yum/pluginconf.d/priorities.conf #确认 enabled = 1
     
       

     
       
#准备目录 
cd /etc/yum.repos.d/
rm *.rpm
mkdir rpmforge_bak
yum install -y wget



     
       #
     
       下载安装rpmforge

     
       #从 http://rpmrepo.org/RPMforge/Using 可以得到rpmforge的最新版本

     
       if
     
        [ 
     
       "
     
       $HOSTTYPE
     
       "
     
        
     
       ==
     
        
     
       "
     
       i686
     
       "
     
        ]
then
 wget http:
     
       //
     
       apt.sw.be
     
       /
     
       redhat
     
       /
     
       el5
     
       /
     
       en
     
       /
     
       x86_64
     
       /
     
       rpmforge
     
       /
     
       RPMS
     
       /
     
       apt
     
       -
     
       0.5
     
       .15lorg3.94a
     
       -
     
       5
     
       .el5.rf.x86_64.rpm
 wget http:
     
       //
     
       apt.sw.be
     
       /
     
       redhat
     
       /
     
       el5
     
       /
     
       en
     
       /
     
       x86_64
     
       /
     
       rpmforge
     
       /
     
       RPMS
     
       /
     
       rpmforge
     
       -
     
       release
     
       -
     
       0.5
     
       .
     
       2
     
       -
     
       2
     
       .el5.rf.x86_64.rpm
elif [ 
     
       "
     
       $HOSTTYPE
     
       "
     
        
     
       ==
     
        
     
       "x86_64
     
       "
     
        ]
then
 wget http:
     
       //
     
       apt.sw.be
     
       /
     
       redhat
     
       /
     
       el5
     
       /
     
       en
     
       /
     
       i386
     
       /
     
       rpmforge
     
       /
     
       RPMS
     
       /
     
       apt
     
       -
     
       0.5
     
       .15lorg3.94a
     
       -
     
       5
     
       .el5.rf.i386.rpm 
 wget http:
     
       //
     
       apt.sw.be
     
       /
     
       redhat
     
       /
     
       el5
     
       /
     
       en
     
       /
     
       i386
     
       /
     
       rpmforge
     
       /
     
       RPMS
     
       /
     
       rpmforge
     
       -
     
       release
     
       -
     
       0.5
     
       .
     
       2
     
       -
     
       2
     
       .el5.rf.i386.rpm 
fi
rpm 
     
       -
     
       Uvh 
     
       *
     
       .rpm
mv 
     
       *
     
       .rpm rpmforge_bak
 

     
       #
     
       安装其他插件
     
       

     
       yum install 
     
       -
     
       y yum
     
       -
     
       downloadonly
    
      

使用：./yum-install.sh

 

[root@instant_cacti ~]# yum --help     #执行该命令，可以看到以下插件已经生效
Loaded plugins: downloadonly, fastestmirror, priorities
...

 

【yum-downloadonly插件使用】

[root@instant_cacti ~]# yum --help|grep download
Loaded plugins: aliases, changelog, downloadonly, fastestmirror, priorities
  --downloadonly don't update, just download
  --downloaddir=DLDIR specifies an alternate directory to store packages

[root@instant_cacti ~]# yum install -y cacti --downloadonly --downloaddir=./       #下载rpm包到当前目录
...

Remove 0 Package(s)
Install 1 Package(s)
Downgrade 0 Package(s)

Total download size: 2.2 M
Downloading Packages:
cacti-0.8.7g-2.el5.rf.noarch.rpm 0% [ ] 0.0 B/s | 16 kB --:-- ETAcacti-0.8.7g-2.el5.rf.noarch.rpm | 2.2 MB 00:05      

exiting because --downloadonly specified