ios_backup_to_tftpserver.rb

require 'expect4r'
#gem install expect4r

@tftps = "" #tftpserver ipaddress or hostname



def bak_config(host,username,password, filename)
		ios = Expect4r::Ios.new_telnet(
		  host: host,
			user:username,
		  pwd: password,
		  enable_password: password
		)
		ios.login
		ios.to_exec
		puts ios.putline("copy startup-config tftp:\r" + @tftps + "\r" + filename , no_trim:true)
end

#bak_config("target_host","username","password","filename")