Acquire::CompressionTypes::Order "gz";
3.如果是因为版本太老而出错的话，把/etc/apt/sources.list 中 所有的archive 改成 old-releases
sudo sed -i -e 's/archive.ubuntu.com\|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list
Acquire::CompressionTypes::Order "gz";
sudo sed -i -e 's/archive.ubuntu.com\|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list
