Duplicity

Duplicity is a handy tool for backing up your directories. It creates encrypted tar-format volumes and can upload them to either a remote or local file server. What’s cool is that it uses something called librsync, which makes the backups space-efficient. This means it only saves the bits of files that have changed since your last backup!

Secure Your Backups

One of the best things about Duplicity is how it keeps your data safe. It uses GnuPG to encrypt and sign your archives, so they’re protected from snooping or any unwanted changes by the server.

The Rdiffdir Utility

The Duplicity package comes with a neat tool called rdiffdir. This is an extension of librsync specifically for directories. With rdiffdir, you can create signatures and deltas not just for files but also for whole directories! And guess what? These signatures and deltas are in GNU tar format, making them super useful.

Protocols Supported by Duplicity

You might be wondering how Duplicity connects to a file server. Well, it supports a bunch of protocols! So far, it works with ssh/scp, local file access, rsync, ftp, HSI, WebDAV, and even Amazon S3.

File Support Features

Currently, Duplicity has you covered with full Unix permissions along with support for deleted files, directories, symbolic links, device files, and fifos. However, hard links aren’t supported at this time.

Installation Made Easy

If you want to install Duplicity on your Mac, it's pretty straightforward! Just open up a Terminal window and navigate to the folder where Duplicity is located. Then run this command:

sudo python setup.py install

This will need admin privileges to get started!

If you're interested in downloading Duplicity or want to check out more details about it, you can head over to this link: Download Duplicity!