yum设置代理服务器

export http_proxy=http://192.168.224.1:10809export https_proxy=http://192.168.224.1:10809export ftp_proxy=http://192.168.224.1:10809 export http_proxy=192.168.224.1:10809export https_proxy=192.168.224.1:10809export ftp_proxy=192.168.224.1:10809 export http_proxy=20.10.0.10:808export https_proxy=20.10.0.10:808export ftp_proxy=20.10.0.10:808 unset http_proxyunset https_proxyunset ftp_proxy