Gnome 3 uses
DCONF to store the preferences in a single binary file:
As per the Gnome docs, it is recommended to save only the settings that you need and restore them with either
gsettings is only able to restore the value(s) for one single key at a time (plus, the value must be quoted) and that makes it a bit awkward for this kind of task. Which leaves us with
So, in this particular case, save the current settings for
gnome-shell keyboard shortcuts1:
dconf dump /org/gnome/shell/keybindings/ > bkp
Load the settings on another system:
dconf load /org/gnome/shell/keybindings/ < bkp
1: WM and Media Keys shortcuts belong to different schemas:
dconf only dumps non-default values so if you run e.g.
dconf dump /org/gnome/desktop/wm/keybindings/
and don't get any output that means there's no custom WM shortcut defined.
As a side note,
dconf-editor is a tool that helps visualizing
dconf settings structure, i.e.
schema [:path] key value, the type and the default values of any key etc.
For the record, saving the preferences with
gsettings list-recursively org.gnome.shell.keybindings > bkp
org.gnome.shell.keybindings focus-active-notification ['<Super>n']
org.gnome.shell.keybindings open-application-menu ['<Super>F1']
org.gnome.shell.keybindings toggle-application-view ['<Super>a']
org.gnome.shell.keybindings toggle-message-tray ['<Super>m']
org.gnome.shell.keybindings toggle-recording ['<Control><Shift><Alt>r']
Now loading the preferences (as I said, for each line in the backup file you need a separate command and don't forget to quote the values):
gsettings set org.gnome.shell.keybindings focus-active-notification "['<Super>n']"
gsettings set org.gnome.shell.keybindings open-application-menu "['<Super>F1']"
gsettings set org.gnome.shell.keybindings toggle-application-view "['<Super>a']"
gsettings set org.gnome.shell.keybindings toggle-message-tray "['<Super>m']"
gsettings set org.gnome.shell.keybindings toggle-recording "['<Control><Shift><Alt>r']"