kali linux 更新源

vim  /etc/apt/sources.list把下面的添加进去官方源根本就一直404#中科大deb http://mirrors.ustc.edu.cn/kali kali-rolling main non-free contribdeb-src http://mirrors.ustc.edu.cn/kali kali-rolling main non-free contrib#阿里云#deb http://mirrors.aliyun.com/kali kali-rolling main non-free contrib#deb-src http://mirrors.aliyun.com/kali kali-rolling main non-free contrib#清华大学#deb http://mirrors.tuna.tsinghua.edu.cn/kali kali-rolling main contrib non-free#deb-src https://mirrors.tuna.tsinghua.edu.cn/kali kali-rolling main contrib non-free#浙大#deb http://mirrors.zju.edu.cn/kali kali-rolling main contrib non-free#deb-src http://mirrors.zju.edu.cn/kali kali-rolling main contrib non-free#东软大学#deb http://mirrors.neusoft.edu.cn/kali kali-rolling/main non-free contrib#deb-src http://mirrors.neusoft.edu.cn/kali kali-rolling/main non-free contrib#官方源#deb http://http.kali.org/kali kali-rolling main non-free contrib#deb-src http://http.kali.org/kali kali-rolling main non-free contrib#重庆大学#deb http://http.kali.org/kali kali-rolling main non-free contrib#deb-src http://http.kali.org/kali kali-rolling main non-free contrib