LFTP is a free open source command line file transfer software for Linux. It supports FTP, FTPS, HTTP, HTTPS, HFTP, FISH, SFTP and BitTorrent protocols. It also supports Fast, DHT, PEX, Multi-tracker, Metadata, magnet bittorrent extensions, WebDAv, SRV DNS records, reget and reput support. Some other important features are transfer rate limiting and number of connections limit. It also comes with Job queuing and background jobs support, job execution at specified time, bookmarks and aliases support.
Install LFTP on Ubuntu:
Installation of LFTP File Transfer Program on Ubuntu is a very easy. Just open your terminal app (Ctrl+Alt+T),type the below command and hit the enter key.
sudo apt-get update
Type your ubuntu password if needed. And then type and run the below command.
sudo apt-get install lftp
it will install the latest version of LFTP ftp Program on Ubuntu. You also need to install openssh and openssl via below command.
sudo apt-get install openssh openssl
Then run the below command in terminal to run LFTP File Transfer Program.
lftp
Then use the below syntax to connect your site.
lftp ftp://username@hostname:port
Here you can replace username with your ftp username and hostname with your site name and port with your sites ftp port number. ex:21
Then type your ftp password to connect your site.
please check this link for LFTP manual