Ubuntu – How to you paste in List-Mode with Nautilus in Gnome3? In other words… Where do I rightclick to “Paste”? (Not “Paste into Folder…”)

Pasting paths into Nautilus' "address" bar

You can activate the "location" view with CTRL+L. To permanently show the path instead of "breadcrumbs" you will have to manually change a dconf key:

gsettings set org.gnome.nautilus.preferences always-use-location-entry true

To revert the changes simply execute the following command:

gsettings set org.gnome.nautilus.preferences always-use-location-entry false

Copying file paths in the Save/Open dialog with Nautilus 3.4.2

As @AliNa pointed out, it used to be that you could access the location of a file or folder in the save/open dialog in the same manner as you can in a regular Nautilus window

This feature has been abolished in recent Nautilus releases as part of GNOME's design philosophy.

However, you can still access the file and directory paths from the context menu:

It seems as though this method has been removed as well in more recent revisions of Nautilus (the ones that ship with Ubuntu >12.10)...

Sources:

How can I copy the current path from Nautilus?

Typing location path instead of clicking directory buttons in the file picker dialog?

How do I change dconf keys without a gui (for a post-install script)?

The easiest method is this keyboard combo: Alt+F, D, E.

This basically mimics Florian Diesch’s answer: Alt+F opens “File”, D opens “New Documents” and E is for “Empty Document”.