This question has been closed as a duplicate of this question. But I do not believe they are really asking the same thing. I think that the recent question is asked in a way that is unfortunately not specific enough for that to be obvious to everyone, but I would recommend that the question be edited and reopened. I'm not sure if the right place for me to discuss this is here in meta, or in comments to the question, but I figure I'll play it safe and post here first. While I'm aware of closed questions being reopened with editing following discussion, I'm not familiar with any situations where this has happened to questions marked as duplicates (without prior discussion in meta).
Muhammad Qasim, who asked the recently posted question, had just previously asked about how to install a minimal GUI on an Ubuntu Server system. One of the answers suggested to use
sudo apt-get install ubuntu-desktop --no-install-recommends. Since he did not indicate an inability to do this, and since he posted part of that command in his second, recently closed question, there is no reason to think the machine he is using doesn't have an Internet connection. Instead, it looks like he wants to avoid downloading all the same
.deb files when either starting over from scratch on the same machine, or setting up other machines similarly. For that purpose, an offline package management utility like Keryx (as suggested in the accepted (and most popular) answer to the question of which Muhammad Qasim's has been marked a duplicate) would likely be extreme overkill (whereas it is clearly the best solution to the problem it was written in response to). And if an offline package management utility turns out to be the best solution for Muhammad Qasim, it's likely that something like
apt-offline will be preferable, because his machine will not be using a GUI all the time.
For these reasons, it seems to me that this recent question is asking something different from this previous question, that the best answers are likely quite different, and thus that they should not be considered duplicates.