yum

   

    1.列出所有可更新的软件清单命令：yum check-update
    2.更新所有软件命令：yum update
    3.仅安装指定的软件命令：yum install <package_name>
    4.仅更新指定的软件命令：yum update <package_name>
    5.列出所有可安裝的软件清单命令：yum list
    6.删除软件包命令：yum remove <package_name>
    7.查找软件包 命令：yum search <keyword>
    8.清除缓存命令:
        yum clean packages: 清除缓存目录下的软件包
        yum clean headers: 清除缓存目录下的 headers
        yum clean oldheaders: 清除缓存目录下旧的 headers
        yum clean, yum clean all (= yum clean packages; yum clean oldheaders) :>清除缓存目录下的软件包及旧的headers

 

[root@192 Linux-wyf]# /usr/bin/yum clean headers
已加载插件：fastestmirror, langpacks
正在清理软件源： base epel extras updates
0 header 文件已移除

[root@192 Linux-wyf]# /usr/bin/yum clean all
已加载插件：fastestmirror, langpacks
正在清理软件源： base epel extras updates
Cleaning up everything
Maybe you want: rm -rf /var/cache/yum, to also free up space taken by orphaned data from disabled or removed repos
Cleaning up list of fastest mirrors