Sometimes you might be installing a package and don’t want it to prompt at all. Apt will prompt you a lot sometimes if you just do an apt-get install packageName. For example

If you want to install, if there are multiple packages</span>
  * Accept package from a signed repo that you don&#8217;t have the key for
  * If you want to keep the old config

So you can run the following

apt-get -q -y -o DPkg::Options::=--force-confold --force-yes install packageName

---