This question already has an answer here:
I'm writing this in Ubuntu 16.04.5 LTS. I'm looking at Gnome Extensions for Ubuntu 18.04 that work with Gnome version 3.24 and breaks with version 3.26.
How can I find out using browser (google search doesn't tell me),
apt list | grep ... or other means what version of Gnome Ubuntu 18.04 is using today?
Rebooting every time I want to know something about a version I haven't booted is inconvenient.
zcat /dev/nvme0n1p10/usr/share/doc/gnome-session-bin/changelog.Debian.gz | head -n1 gzip: /dev/nvme0n1p10/usr/share/doc/gnome-session-bin/changelog.Debian.gz: Not a directory
Important Note: I do not have 18.04 installed. I have 18.04 Unity installed. I want to know current known version would be installed so I can research bugs before installation.
EDIT: I'm not looking for the Gnome version of the current booted partition (as the duplicate candidate does) using:
$ apt-cache policy gnome-shell gnome-shell: Installed: (none) Candidate: 3.18.5-0ubuntu0.3 Version table: 3.18.5-0ubuntu0.3 500 500 http://ca.archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages 3.18.4-0ubuntu3 500 500 http://ca.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
I'm looking for the gnome version for a partition that needs to be mounted first (18.04). Or simply a link to a website containing the current version numbers as of today for 14.04, 16.04, 18.04, etc.