ตั้งค่าDEBIAN_FRONTENDการnoninteractive:
DEBIAN_FRONTEND=noninteractive apt-get ...
นอกจากนี้ยังมีผลบังคับใช้dpkg --reconfigure, dpkg-configureฯลฯ
จากman 7 debconf:
noninteractive
This is the anti-frontend. It never interacts with you at all,
and makes the default answers be used for all questions. It
might mail error messages to root, but that's it; otherwise it
is completely silent and unobtrusive, a perfect frontend for
automatic installs. If you are using this front-end, and require
non-default answers to questions, you will need to preseed the
debconf database; see the section below on Unattended Package
Installation for more details.
ถ้าคุณจะตั้งnoninteractiveคุณควรพิจารณาการตอบคำถามโดยใช้debconfdebconf-set-selections
man 7 debconfบน Ubuntu 16.04 คุณต้องติดตั้งครั้งแรกdebconf-docเช่นsudo apt-get install debconf-doc