Since FreeBSD 10.0 pkgng becomes new default packaging management system. To start using it you need to run
/usr/sbin/pkg boostrap command that will fetch and install the whole new packaging system. It will politely ask you if you are sure to proceed.
The problem is when you want to automate your install you are hold by that interactive question.
To get rid of that annoying question you can set environment variable
ASSUME_ALWAYS_YES, or if you are sure that you’ll always want to answer yes to all commands, like install or delete, you can instead of adding
-y to every command add the
/usr/local/etc/pkg.conf file to suspend any further questions.