[Bug 903996] Re: Recognize if apt isn't on a tty, don't wait for input

[David Kalnischkies]

This change would break usage of tools like 'tee' which multiplex the
output for e.g. logging proposes, so sorry but no. And adding -y should
be a user decision as it is a potentially dangerous option… So double
no.

** Changed in: apt (Ubuntu)
       Status: New => Invalid

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Title:
  Recognize if apt isn't on a tty, don't wait for input

Status in “apt” package in Ubuntu:
  Invalid

Bug description:
  If apt-get or apt-add-repository don't have a tty and are being run
  non-interactively (e.g. through cloud-init), they will hang waiting
  for confirmation if the user doesn't specify -y.  Ideally they should
  either fail and log that the user must specify -y, or succeed without
  trying to grab the user's input.

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