Sending database backup in email using core ruby

backup_via_email.rb

require 'net/smtp'

FROM = 'Some name <name@email.me>'
TO   = %w(name@email.me)
SUBJ = "DB backup #{Time.now.strftime('%Y-%m-%d')}"

# find the last (in 60 mins) backup
filename = `find /path/to/backups/*.sql.gz -mmin -60`.chomp
exit if filename.nil? || filename.empty?

# Read a file and encode it into base64 format
filecontent = File.read(filename)
encodedcontent = [filecontent].pack("m")   # base64

marker = 'SOMEUNIQMARKER'

body =<<EOF
Please find DB backup in attachment.
EOF

# Define the main headers.
part1 =<<EOF
From: #{FROM}
To: #{TO.join(';')}
Subject: #{SUBJ}
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary=#{marker}
--#{marker}
EOF

# Define the message action
part2 =<<EOF
Content-Type: text/plain
Content-Transfer-Encoding:8bit

#{body}
--#{marker}
EOF

# Define the attachment section
part3 =<<EOF
Content-Type: multipart/mixed; name=\"#{filename}\"
Content-Transfer-Encoding:base64
Content-Disposition: attachment; filename="#{filename}"

#{encodedcontent}
--#{marker}--
EOF

mailtext = part1 + part2 + part3

# Let's put our code in safe area
begin 
  Net::SMTP.start('localhost') do |smtp|
     smtp.sendmail(mailtext, FROM, TO)
  end
rescue Exception => e  
  print "Exception occured: " + e  
end