LFTP是一款非常著名的字符界面的文件传输工具。支持FTP、HTTP、FISH、SFTP、HTTPS和FTPS协议。如果还需要ssl的支持，则需要额外的OpenSSL依赖
lftp 4.4.10 改进内容包括：
- New mirror options --file/-f and -O.
- WebDAV fixes and improvements.
- A new FTP setting, use-utf8, to disable UTF-8 activation.
- Fixes handling of incorrect encoding of file names.
- Fixes compilation without libiconv.
- Fixes an occasional hang in mirroring.
- Kills SSH when terminating FISH or SFTP connections
