core-agent-linux/misc/apt-conf-70no-unattended

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## Based on pkg-manager-no-autoupdate by Patrick Schleizer <adrelanos@riseup.net>
## https://github.com/Whonix/pkg-manager-no-autoupdate
## Disable automatic update check APT::Periodic::Update-Package-Lists
## which is the Debian default in /etc/apt/apt.conf.d/10periodic.
##
## The execution time would be too predictable, thus make us fingerprintable.
##
## 20noperiodic comes after 10periodic in alphabet so it takes precedence.
##
## Quoted from the Debian Handbook
## http://debian-handbook.info/browse/wheezy/sect.apt-get.html
##
## "[...] Each directory represents a configuration file which is split over multiple
## files. In this sense, all of the files in /etc/apt/apt.conf.d/ are instructions
## for the configuration of APT. APT includes them in alphabetical order, so that the
## last ones can modify a configuration element defined in one of the first ones. [...]
##
## That changes take effect can be verified using:
## apt-config dump
APT::Periodic::Update-Package-Lists "0";
APT::Periodic::Download-Upgradeable-Packages "0";
APT::Periodic::AutocleanInterval "0";
APT::Periodic::Unattended-Upgrade "0";
APT::Periodic::Enable "0";