How to install and enable Gnome shell extensions
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 So I am running Ubuntu 17.10, and it is completely up to date as of this morning, and my UI is Gnome. I am trying to install the Dash-to-Dock shell extension so I can move the launcher to the bottom of the screen, and it's just not working. No matter what I try. I installed the Gnome Tweak app, and there is no "extensions" option in it. I installed gnome-shell-extensions and then I installed gnome-shell-extension-dashtodock. And still nothing. I then installed chrome-gnome-shell and the chrome browser plugin (version 9) and still I cannot enable the extensions. It tells me: Unable to locate GNOME Shell settings or version. Make sure it is installed and running.
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 GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface 'org.gnome.Shell.Extensions' on object at path /org/gnome/ShellI have located and gone into each of the extension JSON files and verified that the version listed matches the installed version (3.24). I have also noted that there is no ~/.local/share/gnome-shell folder on the machine (not idea why). So I am completely out of ideas here, anyone got any suggestions about what I am doing wrong? All my google results seem to imply that this should be a pretty easy thing to do, with just one or two commends. But NOTHING I find it working. For the record, this machine is running the Nvidia proprietary drivers for the display, but most everything else is out of the box Ubuntu 17.10 stuff. 
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 https://websiteforstudents.com/adjust-resize-ubuntu-dock-dash-ubuntu-17-10/ Go to Settings and then Dock. You will have an option called Position on screen.
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 It turns out that while I was running Ubuntu 17.10, it had been upgraded from 17.04 and that upgrade had left the Unity UI installed and active. So the reason why I was not seeing the GNOME shell extension options in the tweaker tool was due to the fact that it was actually Unity and GNOME I was in. One hell of a noob mistake. Once I switched to GNOME, it was all working and I am much happier with GNOME over Unity. 
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 @jrc said in How to install and enable Gnome shell extensions: It turns out that while I was running Ubuntu 17.10, it had been upgraded from 17.04 and that upgrade had left the Unity UI installed and active. So the reason why I was not seeing the GNOME shell extension options in the tweaker tool was due to the fact that it was actually Unity and GNOME I was in. One hell of a noob mistake. Once I switched to GNOME, it was all working and I am much happier with GNOME over Unity. I was going to say, you need to select which one you want to use  


