Every Year I plan to create a new LR Catalogue pointing to an empty clone of my Images Directory Structure then fill in images for eventual merging back to the master catalogue. The following Unix command will create a copy of my directory structure in /Areca-T2/LR JG Pics to Desktop/Temporary\ Stuff – just the folders not the files.
rsync -a /Volumes/Areca-T2/LR\ JG\ Pics /Users/jeffg/Desktop/Temporary\ Stuff –include \*/ –exclude \*
The Folders in Temporary Stuff can then be moved to create a new Images Folder for the year.