s3simple is a small bash script/function for fetching files from and putting files into Amazon's S3 service. It has only two dependencies (curl and openssl), both of which are usually pre-installed or easily available on most modern unixes.

1. Download the s3simple script somewhere.
2. Set AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables.
3. Run s3simple with a method, an s3:// url and, optionally, a local filename.

For example:

export AWS_ACCESS_KEY_ID=AKxxx
export AWS_SECRET_ACCESS_KEY=zzzz

# get a file
./s3simple get s3://mybucket/myfile.txt myfile.txt

# put a file
./s3simple put s3://mybucket/foo.txt foo.txt

# get a file and pipe to tar
s3simple get s3://mybucket/foo.tgz | tar -zx

You can also copy the s3simple function into your bash scripts.

MIT license, see LICENSE.txt for details.