systemctl enable ssh
service ssh start

vi /etc/ssh/sshd_config
PermitRootLogin yes

service ssh restart

vi /etc/apt/sources.list

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


apt-get update

apt-get upgrade


Metasploit:
/usr/share/metasploit-framework/modules/exploits


database update: msfupdate


#searchsploit -u
command will update the exploit datebase from exploit-db.co