I am using drush on ubuntu 14.04. I have more than 20 site on my localhost /var/www with virtualHost setting. I have a question that whenever i go to /var/www/site1 and run drush dl module_name. It download the module in sites/all/modules directory in site1 folder. Now i cd to /var/www/site2 and run drush dl module_name. It will again download the module in site2 module directory.
In every site i have to do drush dl for same module. Is there any method so that i don't need to do drush dl every time. I just do drush dl module, it will check from all other sites for particular module, if not found then will download from internet. I already doing cp and scp for same module. But i want to do with drush. I am very greedy to save my internet bandwidth.
Thanks in Advance.