If you're using S3 to back up your files, it's easier to write a shell script with the AWS CLI. For example here's a script I wrote that I run automatically to back up my computer to S3. I have an exclude array to exclude certain folders. It's simpler than downloading software and more customizable. # $1 # local folder # $2 # bucket declare -a exclude=( "node_modules" "Applications" "Public" ) args="" for item in "${…
Your script doesn't do the same thing as duplicity. Your script mirrors the local directory with your bucket. It loses all history. Duplicity does backups (ie with history) but not just that, it does differential backups to not upload everything all the time.
S3 has bucket versioning if you want to have multiple backups. The S3 sync command also does differential backups; if you for example try to run the script over and over it will only upload new/different files.