第一步，在终端下输入Cat /etc/apt/ources. list
Cat /etc/apt/ources. list
# See http://www.kali.org/docs/general -use/kali - linux-sources-list-repositories/
deb http://kali.org/kali kali-rolling main contrib non-free
# Additional line for source packages
# deb-src Index of /kali kali-rolling main contrib non-free
第二步，输入更新命令
sudo apt update第三步，输入完此命令自动更新
sudo apt full-upgrade -y
