1、yum repolist

  获取当前系统有效的repolist,如下图

常用yum操作命令-风君雪科技博客

2、yum list,列出所有可安装的软件包

  获取当前有效repolist中所能安装的所有rpm包列表,(很长,慎重),可以结合grep命令,搜索需要安装的软件包具体名称,如yum list |grep smnp,见下图

常用yum操作命令-风君雪科技博客

 

  

    2.1 yum list updates,列出所有可更新的软件包

    2.2 yum list installed,列出所有已安装的软件包

    2.3 yum list extras,列出所有已经安装但不在repository的包

3、更换阿里云作为yum源

  a)备份当前yum源:mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

  b)下载新的CentOS-Base.repo 到/etc/yum.repos.d/

  [CentOS 5]

  wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

  或者

  curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

  [CentOS 6]

  wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

  或者

  curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

  [CentOS 7]

  wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

  或者

  curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

  c、运行以下命令生成缓存
    yum clean all

  d、生成缓存
    yum makecache

 4、更换阿里元作为EPEL源 (扩展源) EPEL 是yum的一个软件源,里面包含了许多基本源里没有的软件。

  a)备份epel源:mv /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.backup
  mv /etc/yum.repos.d/epel-testing.repo /etc/yum.repos.d/epel-testing.repo.backup

  b)下载新repo 到/etc/yum.repos.d/

  epel(RHEL 7)
 wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

   epel(RHEL 6)

  wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo

  epel(RHEL 5)

  wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-5.repo

  c、运行以下命令生成缓存
    yum clean all

  d、生成缓存
    yum makecache

 5、更换网易云为yum源

  a) 首先备份/etc/yum.repos.d/CentOS-Base.repo
    mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

  b)下载对应版本repo文件, 放入/etc/yum.repos.d/(操作前请做好相应备份)

    http://mirrors.163.com/.help/CentOS5-Base-163.repo

    http://mirrors.163.com/.help/CentOS6-Base-163.repo

  c)运行以下命令生成缓存
    yum clean all
    yum makecache

 

6、yum查询想要安装的包
  yum search snmp
 

 7、另有命令查看软件包的详细信息

  yum info net-snmp

8、加快yun速度,使用yum-plugin-fastestmirror

  yum -y install yum-plugin-fastestmirror

 9、yum安装卸载命令,

  yum install ‘package_name’
  yum remove ‘package_name’