export AWS_ACCESS_KEY_ID="youraccesskey"
export AWS_SECRET_ACCESS_KEY="yoursecretaccesskey"
export SSL_CERT_DIR=/usr/local/share/s3sync/certs/

cd /usr/local/share/s3sync

./s3sync.rb -d -r -v -s --delete /Library/Apache2/htdocs yourbucketname:pre