Simple File Upload to Amazon S3 From Ruby

    #!/usr/bin/env ruby    require 'rubygems'  require 'aws/s3'    local_file = ARGV[0]  bucket = ARGV[1]  mime_type = ARGV[2] || "application/octet-stream"    AWS::S3::Base.establish_connection!(    :access_key_id     => 'REPLACE_ME',    :secret_access_key => 'REPLACE_ME'  )    base_name = File.basename(local_file)    puts "Uploading #{local_file} as '#{base_name}' to '#{bucket}'"    AWS::S3::S3Object.store(    base_name,    File.open(local_file),    bucket,    :content_type => mime_type  )    puts "Uploaded!"

http://www.rubyinside.com/simple-file-upload-to-amazon-s3-from-ruby-313.html