Question on apt-get update

[Dan Kegel]

On Wed, Sep 25, 2019 at 6:19 AM kavitha R <kavitha.r0573 at gmail.com> wrote:
> How does apt-cache create and updates the local package cache? Is it periodic or manual? As far as my investigation, it is manual (apt-get update).

It can be manual; if a package like unattended-upgrades is installed,
it can run apt-get update periodically; see
https://wiki.debian.org/UnattendedUpgrades