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duplicity

Creates incremental, compressed, encrypted and versioned backups.

Can also upload the backups to a variety of backend services.

More information.

Backup a directory via FTPS to a remote machine, encrypting it with a password:

FTP_PASSWORD={ftp_login_password} PASSPHRASE={encryption_password} duplicity {path/to/source/directory} {ftps://user@hostname/target/directory/path/}

Backup a directory to Amazon S3, doing a full backup every month:

duplicity --full-if-older-than {1M} --use-new-style s3://{bucket_name[/prefix]}

Delete versions older than 1 year from a backup stored on a WebDAV share:

FTP_PASSWORD={webdav_login_password} duplicity remove-older-than {1Y} --force {webdav[s]://user@hostname[:port]/some_dir}

List the available backups:

duplicity collection-status "file://{absolute/path/to/backup/directory}"

List the files in a backup stored on a remote machine, via ssh:

duplicity list-current-files --time {YYYY-MM-DD} scp://{user@hostname}/path/to/backup/dir

Restore a subdirectory from a GnuPG-encrypted local backup to a given location:

PASSPHRASE={gpg_key_password} duplicity restore --encrypt-key {gpg_key_id} --file-to-restore {relative/path/restoredirectory} file://{absolute/path/to/backup/directory} {path/to/directory/to/restore/to}

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