大家好，又见面了，我是你们的朋友全栈君。
进入源文件进行修改
leafpad /etc/apt/sources.list
（其实系统本身就自带了更新源，去掉其注释也是可以的，现在官方源的下载速度也还ok，下面的三选一亦可）
#kali官方源
deb http://http.kali.org/kali kali-rolling main non-free contrib
#中科大的源
deb http://mirrors.ustc.edu.cn/kali kali-rolling main non-free contrib
deb http://mirrors.ustc.edu.cn/kali kali-rolling main contrib non-free
deb-src http://mirrors.ustc.edu.cn/kali kali-rolling main contrib non-free
deb http://mirrors.ustc.edu.cn/kali-security kali-current/updates main contrib non-free
deb-src http://mirrors.ustc.edu.cn/kali-security kali-current/updates main contrib non-free
#阿里云源
deb http://mirrors.aliyun.com/kali kali-rolling main non-free contrib
deb http://mirrors.aliyun.com/kali-security/ kali-rolling main contrib non-free
deb-src http://mirrors.aliyun.com/kali-security/ kali-rolling main contrib non-free
#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
apt-get update
apt-get upgrade
apt-get dist-upgrade
apt-get clean
通过cd一个一个目录切进去，查看
保存退出，输入apt-get update更新即可！
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