how to add an alias address via cli?

==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.2
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): mysql
- Web server (Apache or Nginx):apache
- Linux/BSD distribution name and version:ubuntu-14.04.2
- Related log if you're reporting an issue:
====

How can i add an alias address via command line interface?
Because i am going to migrate a domain into iredmail. there are many  mail aliases ?