How to know whether the ftp upload via ruby is success?

Question

The following code uploads the file via ftp and it works.

require 'net/ftp'
ftp = Net::FTP.new
ftp.passive = true
ftp.connect("***")
ftp.login("***","***")
ftp.chdir "claimsecure-xml-files"
ftp.putbinaryfile("file.xls",File.basename("file.xls"))
ftp.quit

But how can I assure whether the upload was successful?

Answer 1

after

    ftp.putbinaryfile("file.xls",File.basename("file.xls"))

check

    puts ftp.last_response

Answer 2

Crudely - you could "get" the file back and ensure its the same...