Suppress all interaction during upgrade step #891
Merged
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By forcing answers to prompts during installation.
noninteractive
should force default answers,--force-confdef
should force default selection if a conffile has been modified, and--force-confold
should select the old version of the conffile if there is no default option.References:
DEBIAN_FRONTEND - https://manpages.debian.org/jessie/debconf-doc/debconf.7.en.html#Frontends --option options - https://man7.org/linux/man-pages/man1/dpkg.1.html