deb http://http.kali.org/kali kali-rolling main non-free contrib

deb-src http://http.kali.org/kali kali-rolling main non-free contrib

$wget archive.kali.org/archive-key.asc   //下载签名

$apt-key add archive-key.asc   //安装签名

$apt-get update

添加postgresql源

deb http://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main

$wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add -

//添加数字证书

$apt-get update

$apt-get install postgresql

$apt-get install metasploit-framework #so easy

$msfdb init 

$msfconsole

msf>db_status