How to show seconds on the clock in GNOME 3?

time gnome-shell clock

Not sure when this path changed, but as of Ubuntu 13.04 the seconds display can be set in the terminal with:

gsettings set org.gnome.desktop.interface clock-show-seconds true

To turn seconds display off:

gsettings set org.gnome.desktop.interface clock-show-seconds false

and checked with:

gsettings get org.gnome.desktop.interface clock-show-seconds

GUI way:

  1. launch gnome-tweak-tool, sometimes called Advanced Settings
  2. click the Top Bar menu
  3. enable Show seconds

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