--continue
wget -c http://mirrors.163.com/ubuntu-releases/9.10/ubuntu-9.10-desktop-amd64.iso
k = kb， m = mb
wget -c --limit-rate=300k http://mirrors.163.com/ubuntu-releases/9.10/ubuntu-9.10-desktop-amd64.iso
--output-document
wget -c https://gist.github.com/chales/11359952/archive/25f48802442b7986070036d214a2a37b8486282d.zip -O db-connection-test.zip
可以执行shell重定向
wget -cO - https://gist.github.com/chales/11359952/archive/25f48802442b7986070036d214a2a37b8486282d.zip > db-connection-test.zip