Lock Screen Command in Gnome/Cinnamon

The correct lock screen command in Gnome (and hence Cinnamon) is:

gnome-screensaver-command --lock

This is useful in the context of remapping keyboard shortcuts. For some reason, lots of internet searches come up with the equivalent X-based command for locking the screen.

Mapping Keyboard Shortcuts in Cinnamon

Using gconf-editor, follow instructions at http://www.maphew.com/Linux/Use_WinKey_in_Ubuntu.html.

The example is to map Super+E (or Windows+E) to start nautilus, like Windows opens Windows Explorer. The important steps (in gconf-editor) are:

1. Go to /Apps/metacity/global_keybidings
2. Set run_command_1 to <Super>E
3. Go to /Apps/metacity/keybinding_commands
4. Set command_1 to /usr/bin/nautilus