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Deduplicating command line backup program

Attic is a secure backup program for Linux, FreeBSD and Mac OS X. Attic is designed for efficient data storage where only new or modified data is stored.


Space efficient storage

Variable block size deduplication is used to reduce the number of bytes stored by detecting redundant data. Each file is split into a number of variable length chunks and only chunks that have never been seen before are compressed and added to the repository.

Optional data encryption

All data can be protected using 256-bit AES encryption and data integrity and authenticity is verified using HMAC-SHA256.

Off-site backups

Attic can store data on any remote host accessible over SSH as long as Attic is installed.

Backups mountable as filesystems

Backup archives are mountable as userspace filesystems for easy backup verification and restores.

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