root@ubuntu/etc/apt

编辑 sources.list

vim sources.list

deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted

deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted

deb http://mirrors.aliyun.com/ubuntu/ xenial universe

deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe

deb http://mirrors.aliyun.com/ubuntu/ xenial multiverse

deb http://mirrors.aliyun.com/ubuntu/ xenial-updates multiverse

deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted

deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe

deb http://mirrors.aliyun.com/ubuntu/ xenial-security multiverse

deb http://download.virtualbox.org/virtualbox/debian vivid contrib

deb http://mirrors.aliyun.com/kali sana main non-free contrib

deb http://mirrors.aliyun.com/kali-security/ sana/updates main contrib non-free

deb-src http://mirrors.aliyun.com/kali-security/ sana/updates main contrib non-free

更新 apt update

报错

The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6

添加kali key

apt-key adv --keyserver keyserver.ubuntu.com --recv ED444FF07D8D0BF6

再次 apt update 一下 就可以了