How to add external modules to metasploit-framework

Sometimes, some exploits are released as modules for metasploit-frameworks on online databases such as exploit-db but are not added to the metasploit database. So, how to add them manually? Simple, it is necessary that the form is written in ruby, and therefore has extension ".rb". Open console metasploit: sudo service postgresql start msfconsole IIIIII dTb.dTb …