我尝试在虚拟盒上的 Ubuntu 操作系统上安装 katoolin，但无法做到。请帮助我。
root@ubuntu:/home/hackman/Downloads/katoolin-master# apt-get install git clone github.com/LionSec/katoolin.git
Reading package list . . . Done
Building dependency tree
Reading state information . . . Done
E: unable to locate package clone
E: unable to locate package github.com/LionSec
E: couldn't find any package by regex 'github.com/LionSec