borg

Initialize repository

$ borg init --encryption=[repokey] [/path/to/repo]

$ borg create [/path/to/repo::backup-{now}] [/path/to/data]

$ borg list [/path/to/repo]

$ borg extract [/path/to/repo::backup-name]

$ borg check [/path/to/repo]

$ borg prune --keep-daily [7] --keep-weekly [4] [/path/to/repo]

borg command [options]

borg (BorgBackup) is a deduplicating backup program with compression and authenticated encryption. It efficiently stores multiple backups by sharing common data blocks, making it ideal for frequent backups of large datasets.
The tool provides security, efficiency, and reliability for local and remote backups.

init

Initialize repository

Create new archive

Extract archive contents

List archives or contents

Compare archives

Delete archive

Delete old archives by retention policy

Show archive/repository information

Mount archive as filesystem

Verify repository consistency

repokey

Key stored in repository

Key stored locally

No encryption

Authenticated only (no encryption)

- Deduplication (chunk-level)
- Compression (lz4, zstd, zlib)
- Encryption (AES)
- Remote backups over SSH
- Sparse file support
- Archive mounting
- Data verification
- Efficient storage

Repository corruption can lose all backups (keep offsite copies). Encryption key loss means permanent data loss. Large repos need significant RAM for cache. SSH connection required for remote repos. Check operations can be slow.

BorgBackup was created by Thomas Waldmann in 2015 as a fork of Attic backup, focusing on performance, security, and reliability.

restic(1), duplicity(1), rsync(1)