虚拟机kali2.0安装bettercap问题

根据bettercap 指导在kali2.0上安装

执行下面这条命令报错  

 

sudo gem install bettercap*.gem

错误提示

Unable to resolve dependency: 'bettercap (= 1.1.8)' requires 'network_interface (~> 0.0.1)'

在天朝，更改下源即可

gem sources -r https://rubygems.org/

gem sources -a https://ruby.taobao.org/