Cautious update via terminal how?

Question

linux

in general, there is a script in which you need to add a careful update. normal upgrade crashed system

tried
upgrade
dist-upgrade

need to be careful how to write it in bash ?

Answer 1

Well, for starters, you need to remember that when a terminal connection is broken, all programs associated with this terminal receive some kind of signal. As a rule, at the same time they complete the work. Those. the update must be run in background mode.

Answer 2

If apt-get upgrade crashes the system, then something is wrong.
To begin with, update apt itself via
apt-get update apt
Then, carefully update several packages from those proposed for updating with handles.