#! /bin/bash
$HOST = "ftp.domain.com"
$USER = "user@domain.com"
$PASS = "password"
$SOURCE = "/source/path/with/slash/at/the/end/"
$TARGET = "/path/to/destination/"

lftp -f "
open $HOST
user $USER $PASS
lcd $SOURCE
mirror --reverse --delete --verbose --parallel --exclude /.git $SOURCE $TARGET
bye
"