_isover=18.04.2
ISONAME="$DISTRONAME ${_isover} amd64"
ISOURL="${_isover}/ubuntu-${_isover}-desktop-amd64.iso"
SHA256=22580b9f3b186cc66818e60f44c46f795d708a1ad86b9225c458413b638459c4

mirrorlist=(
https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases
http://releases.ubuntu.com
http://mirrors.ustc.edu.cn/ubuntu-releases
)