Parallel put to s3. Requires node 0.11 or later (see http://bahmutov.calepin.co/a-taste-of-nodejs-generators.html)
Install with npm
npm install -g pput
Now you can start copying files
pput --key=AWS_KEY --secret=AWS_SECRET --bucket=S3_BUCKET [FILE] ...
AWS_KEY and AWS_SECRET can optionally be set as environment variables.
The default number of workers is 100. Override with --workers option
export AWS_KEY=xxxx
export AWS_SECRET=xxxx
pput --bucket=S3_BUCKET --workers=10 [FILE] ...