Protecting Files
Christine Bresnahan, Richard A. Blum · 2019
This chapter discusses how to protect files. Protecting data includes creating and managing backups. A backup, often called an archive, is a copy of data that can be restored sometime in the future should the data be destroyed or become corrupted. Backing up your data is a critical activity. But even more important is planning your backups. These plans include choosing backup types, determining the right compression methods to employ, and identifying which utilities will serve your organization's data needs best. The Secure Hash Algorithms (SHA) is a family of various hash functions. Though typically used for cryptography purposes, they can also be used to verify an archive file's integrity. Several utilities implement these various algorithms on Linux.