http://www.itworld.com/article/3029204/macs/10-essential-os-x-command-line-tips-for-power-users.html?amp&&&&&idg_eid=1c421af490830136e8a49f1fe94cdc2c&token=%23tk.ITWNLE_nlt_itworld_today_2016-02-03
Angel Alcala Turullols
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