Using Fog to examine S3 buckets

connection = Fog::Storage.new({
  :provider                 => 'AWS',
  :aws_access_key_id        => 'my_key_id',
  :aws_secret_access_key    => 'secret_key',
  :region => 'eu-west-1'
})    

 # get the bucket    
 s3_bucket_name = 'my_bucket'
 dir =   connection.directories.detect { | dir | dir.key == s3_bucket_name }

 # iterate through files
 dir.files.each { | file | 
   # do your work here
 }