Title: Display manually installed packages on FreeBSD 11
       Author: Solène
       Date: 16 August 2017
       Tags: freebsd11
       Description: 
       
       If you want to show the packages installed manually (and not installed
       as dependency of another package), you have to use "pkg query" and
       compare if %a (automatically installed == 1) isn't 1. The second
       string will format the output to display the package name:
       
           $ pkg query -e "%a != 1" "%n"