F7 中添加源并设置自动选择最快的源

添加源：

我添加了两个

[root@localhost ~]# rpm -ivh
http://rpm.livna.org/livna-release-7.rpm

Retrieving
http://rpm.livna.org/livna-release-7.rpm

warning: /var/tmp/rpm-xfer.LCJ57g: Header V3 DSA signature: NOKEY, key ID a109b1ec

Preparing... ########################################### [100%]

1:livna-release ########################################### [100%]

[root@localhost ~]# rpm -ivh
http://ftp.freshrpms.net/pub/fre ... 1.1-1.fc.noarch.rpm

Retrieving
http://ftp.freshrpms.net/pub/fre ... 1.1-1.fc.noarch.rpm

warning: /var/tmp/rpm-xfer.8mtNEd: Header V3 DSA signature: NOKEY, key ID e42d547b

Preparing... ########################################### [100%]

1:freshrpms-release ########################################### [100%]

[root@localhost ~]#