yum install wget
wget -c http://mirrors.163.com/ubuntu-releases/9.10/ubuntu-9.10-desktop-amd64.iso
wget -c --limit-rate=300k http://mirrors.163.com/ubuntu-releases/9.10/ubuntu-9.10-desktop-amd64.iso
Linux wget断点续传，限速下载
原文：https://www.cnblogs.com/xzlive/p/9584500.html
