ftpcopy
Obsolete. Use one of the following instead:
    get ftp://... -o ftp://...
    get -O ftp://... file1 file2...
    put ftp://...
    mput ftp://.../*
    mget -O ftp://... ftp://.../*
or  other  combinations  to  get FXP transfer (directly between two ftp
servers).  lftp would fallback to plain copy (via client) if FXP trans-
fer cannot be initiated or ftp:use-fxp is false.

所以你可以通过这样做来复制文件：

get filename -o ftp://user@ftpsite/directory/copyoffile

也许这比put / get更好,只因为你会做类似FXP的事情,服务器将使用自己的本地带宽