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The provided backup script creates a restoration script and instructions for recovering the data from the flash drive. There are two copies of the data. One of them is from the previous back up on the drive ans is in a directory named save, the other is in the main directory.
The name of the restoration script is restore.sh. This script is built by the backup script and will ask for the password used to encrypt the program data. As provided, it will delete any data in the database, restore the data in the database with that on the flash drive, and modify the system to start the postgres database and perform the backup when the computer is shut down.
The instructions can be found in the file README.TXT. This should have the basic information on recovering the data and reconfiguring the system. They are not finely detailed, because there is no guessing the full configuration of the system.
Caveate: The recovery of the user configuration as well as any forms and reports is left to the user. The data is on the flash, but it is the user's responsibility to put it back.