There is a XML file that contains all the shortcut definitions. This file is called 'shortcuts.xml' (R2012a and earlier) or 'shortcuts_2.xml' (R2012b and later). It is located in the MATLAB preferences directory. The location of this directory can be determined by entering the following command in the MATLAB command prompt:
On a Windows operating system you can directly open the preferences directory by typing the following at the MATLAB command prompt:
Copy the following XML-files into the preferences directory of another MATLAB installation: # MATLABDesktop.xml # MATLABQuickAccess.xml # favorite_commands_toolset_favorite_commands_gallery.xml # FavoriteCommands.xml # shortcuts_2.xml
This will create all the shortcuts defined in this file in that particular installation. If you are copying these shortcuts from a pre-R2012b version of MATLAB to R2012b or later, rename the file from 'shortcuts.xml' to shortcuts_2.xml'.