never delete old backups (I want to be able to decide which old backups should be deleted, or if I want to buy a disk with more space for my backups).due to consecutive full backups or photos contained in several albums make use of hard links whenever possible instead of copying files, to minimize additional disk usage e.g.full exports: each export creates a new folder named after the current date.generate a human readable folder structure containing all folders and albums from the Photos library (usable with any other program on any platform).export all original and modified photos.This opened my eyes, so I decided to implement a small program which implements the following requirements, partly inspired by how Time Machine works: Fortunately I found the photos in a backup of my old Aperture library. Because of Time Machine automatically removes old backups to get new disk space, the photos were also deleted from my backups. Using Time Machine to backup my photos is what I've done for many years till I lost some of the most important photos in my Photos library (maybe by own mistake). Backups are not portable to another system other than a Mac with Photos. Time Machine does nothing else but backup this database to an external disk. But the macOS Photos Library has it's very special database structure - it's in parts file system based, but not intended to open it with any other program than Apple's Photos. The answer is: Time Machine is one of the best backup solutions I know. You may ask: why another backup solution in addition to Time Machine, which already backups my Photos library? Like Apple's Time Machine, it backup's the data in folders containing full backups, while using hard links to minimize disk usage.
This is a headless program (with command line interface) to export all photos of the macOS Photos library to a filesystem folder. March 2021, Andreas Bentele PhotosExporter
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