執行apt-get install xxxx時，報以下錯誤

E: There are problems and -y was used without --force-yes

解決方案：

vim /etc/apt/sources.list

刪除原有，添加如下：

deb http://old-releases.ubuntu.com/ubuntu/ natty main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ natty-security main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ natty-updates main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ natty-proposed main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ natty-backports main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ natty main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ natty-security main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ natty-updates main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ natty-proposed main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ natty-backports main restricted universe multiverse

注意：這里使用的是ubuntu的源，也可以網上找源去，不過bt系列的源已經停止更新了，部分軟件已經找不到了

kali可以添加以下源：

deb http://mirrors.ustc.edu.cn/kali kali-rolling main non-free contrib
deb-src http://mirrors.ustc.edu.cn/kali kali-rolling main non-free contrib

替換源

apt-get update

如果把源改了以后，在bt5上執行apt-get install xxx時報以下錯誤

E: Sub-process /usr/bin/dpkg returned an error code (1)

處理方法：

mv /var/lib/dpkg/info /var/lib/dpkg/info.bak //現將info文件夾更名
mkdir /var/lib/dpkg/info //再新建一個新的info文件夾
apt-get update
apt-get -f install
mv /var/lib/dpkg/info/* /var/lib/dpkg/info.bak
rm -rf /var/lib/dpkg/info //把自己新建的info文件夾刪掉
mv /var/lib/dpkg/info.bak /var/lib/dpkg/info //把以前的info文件夾重新改回名字
apt-get update

最后：bt系列的源不再更新了，上述方法可能不能夠完全解決你的問題，建議用kali去做任務