The program will only inspect directories specified in the .paths/paths.txt file. To change the root directory of the local and backup, change LOCAL_START and USB_START in macros.h.
Only tested on macOS Mojave 10.14.
To build, type 'make' in root directory. To run, type './backup'.
./backup -a <full_path>
Note: Does not remove the directory on the remote directory
./backup -r <full_path>