source distro/ubuntu/22.04/config ISONAME="$DISTRONAME ${_ver} amd64" ISOURL="${_ver}/ubuntu-${_ver}-desktop-amd64.iso" SHA256=b85286d9855f549ed9895763519f6a295a7698fb9c5c5345811b3eefadfb6f07 mirrorlist=( http://releases.ubuntu.com http://mirrors.ustc.edu.cn/ubuntu-releases https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases )