[alderon]

The commandline can usually do a more granular search than a GUI app. The link below can get you started.

Linux Find Files By Date And List Files Modified On a Specific Date

Linux Find Files By Date And List Files Modified On a Specific Date - nixCraft

Learn how to find out files by date (e.g. find file accessed or modified on April/23/2008) on Linux and UNIX command line options

www.cyberciti.biz

If you prefer a GUI, take a look at 'catfish' or similar search app.

 

[alderon]

Appreciate you adding 'the entire story.' Haven't used sync in years and not for what you're doing, so not familiar enough to refine what you've posted.

I need to syncronize with rsync folders/files and subfodlers between two places and remove the originals without deleting them (eventually adding a suffix that rsync can exclude on the next sync).

Too many unknowns to know what to suggest. Eg: how many originals are there, 20 or 200? How far down are the directories which contain the originals, and do their directory levels vary? Do you edit the originals and/or create new originals (which changes the Creation and/or Last Modified date)?

Perhaps, as you were thinking, start with renaming all the originals with a find/mv cmd? Or maybe moving all the originals to their own subdirectory? Either will allow you to exclude, delete and/or sync by name or location instead of by various creation/modified dates.

Searching 'rsync exclude files by name' and/or 'rsync delete files by location' will provide some better answers than my previous post.

Good luck.