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https://raw.githubusercontent.com/KJlmfe/soEasyUbuntu/master/get_fast_mirror/sources_mirrors.list
https://raw.githubusercontent.com/KJlmfe/soEasyUbuntu/master/get_fast_mirror/getfastmirror.sh
sudo apt-get update
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原文地址：http://www.cnblogs.com/cmyk/p/5030823.html
