I already have a mirror of the entire slackware64-current/ directory tree using
wget -r -np -R "index.html*" https://mirror.slackbuilds.org/slackware/slackware64-current/
and that's fine. But it's getting a bit old, and I'd like to update just the changed files. rsync would work great, but I don't have an ssh username@... for that mirror.slackbuilds.org/ site. Is there any way to rsync publicly-accessible files from a remote server without a username@?
Alternatively, I've browsed the manpages for lftp and wget, but am not seeing exactly how to construct the appropriate commands. It seems like lftp would do the trick if I could figure out exactly how, but the manpage isn't entirely clear (to me).
So what, and exactly how, is the best way to sync up a local directory tree from a publicly accessible remote server (without any ssh username or other privileges)? It looks like Rsync from remote server to local computer with no public IP is asking basically the same question, but not getting a suitable answer (at least not for my purposes). And, by the way, it would be great to also have an rsync -n type of option, so that I could see what needed updating before actually updating it.
