Upgrading over ssh and connection failure

[Tom H]

On Sun, Aug 12, 2018 at 5:43 PM Nils Kassube <kassube at gmx.net> wrote:
> Nils Kassube wrote:
>> Colin Law wrote:
>>>
>>> I have several systems that I access via ssh.  When I upgrade using
>>> apt upgrade is there a danger of the upgrade seriously messing up if
>>> the connection goes down in the middle of the operation, while
>>> upgrading the kernel for example?  When I say say seriously messing
>>> up I mean something like ending up with a non-bootable system.
>>
>> You should install the package "screen". If it finds the screen
>> application, the upgrade command starts a screen session and you can
>> continue an interrupted upgrade if you can connect to the machine
>> again. It saved me a lot of work when I once accidentally broke the
>> connection.
>
> Please ignore the nonsense above - I mixed up apt upgrade with the
> release upgrade. I'm sorry if I created some confusion.

screen (or tmux) is the right tool.