方法一:
export http_proxy="proxy:portnum"
方法二:(http://www.fedoraforum.org/forum/showthread.php?t=742)
create the following files in /etc/profile.d, and then this will work in *any* shell for *any* user of the system
#proxy.sh export http_proxy=http://host.com:port/ export ftp_proxy=http://host.com:port/ export no_proxy=.domain.com export HTTP_PROXY=http://host.com:port/ export FTP_PROXY=http://host.com:port/ #proxy.csh setenv http_proxy http://host.com:port/ setenv ftp_proxy http://host.com:port/ setenv no_proxy .domain.com setenv HTTP_PROXY http://host.com:port/ setenv FTP_PROXY http://host.com:port/
在/etc/yum.conf中设置proxy,prox_username和proxy_password选项。
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