Everybody needs to back up their files and/or DBs to an S3 bucket.
This is a collection of short shell scripts that do just that.

The scripts use s3cmd for uploading the files to S3.
To install this tool on Debian/Ubuntu systems:

wget -O- -q http://s3tools.org/repo/deb-all/stable/s3tools.key | sudo apt-key add -
sudo wget -O/etc/apt/sources.list.d/s3tools.list http://s3tools.org/repo/deb-all/stable/s3tools.list
sudo wget -O/etc/apt/sources.list.d/s3tools.list http://s3tools.org/repo/deb-all/stable/s3tools.list
sudo apt-get update && sudo apt-get install s3cmd

For other distros check http://s3tools.org/repositories

Take a look at http://s3tools.org/s3cmd for detailed setup instructions, but
basically you just need to run s3cmd --configure

The backup scripts assume that you have a bucket named backups.yourcompany.com