The "mirror" command is all you need to copy/mirror a site with lftp:
$ lftp
lftp :~> connect ftp.domain.tld
lftp ftp.domain.tld:~> login <username>
lftp ftp.domain.tld:~> mirrorHere's a one liner:
$ lftp -e mirror -u <username>,<password> <host>mirror
Mirroring sites with lftp
Submitted by sandip on Sat, 11/17/2007 - 19:45