Backup to S3 using duplicity

Backup a directory to S3. The script make full backups every 30 days and incremental backups the rest of the time.

#!/bin/bash

if [ $# -lt 3] || [ $# -gt 3]; then
    echo 'invalid number of parameters'
    echo 'Usage: backup <folder-to-backup> <bucket-name> <folder-name>'
else
    echo 'starting backup'
    export PASSPHRASE=your_passphrase
    export AWS_ACCESS_KEY_ID=your_aws_access_key
    export AWS_SECRET_ACCESS_KEY=your_aws_secret_access_key

    duplicity --extra-clean --full-if-older-than 1M $1 s3://s3.amazonaws.com/$1/$2
fi

Coding

Bash