GNU/Linux Elementary OS Download Only Package with Dependencies for Offline Installation
How to Download Package with Dependencies without Internet on Elementary OS LTS GNU/Linux – Step by step Tutorial.
And the exact Elementary Package Dependencies Download make use of the very useful pkgdownload Script.
Especially relevant: this Script is working also in case of already installed Packages.
Because unluckily the apt and apt-get Packages Managers development is still not aware of a potential Offline Package Installation requirement.

1. Launching Shell Emulator
Open a Terminal window
(Press “Enter” to Execute Commands)
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