Re: Slightly OT: I'm looking for a tool to merge maildirs
On Tue, Jan 25, 2022 at 12:02:34PM +0100, Marcus C. Gottwald wrote: > > Chris Green wrote (Sun 2022-Jan-23 10:46:33 +): > > > Both hierarchies will be on the same computer so it isn't an IMAP > > synchronisation tool I'm looking for. These are just directory trees > > full of maildir mailboxes. > > How about copying files on disk? > > You could use "find" and/or "grep" to find the messages (= files); > use hardlinks if you're sure that no message will be modified; use > reflinks if the filesystem supports them; or simply copy from your > current area to the archive again and again, if it's not too much > data; use "fdupes" to remove duplicates (= identical content in > differently named files) if there's a chance for duplicates being > created. > That's a point! If I simply use rsync to copy my 'current' maildir hierarchy to the 'archive' hierarchy then only the newer files get copied, all the older ones will already be there. It might be worth running fdupes on the archive occasionally but I don't think duplicates would be a big problem, the occasional one won't matter anyway. All I need to do then is delete files older than whatever date I decide to 'archive' and the job's done! -- Chris Green
Re: Slightly OT: I'm looking for a tool to merge maildirs
Chris Green wrote (Sun 2022-Jan-23 10:46:33 +): > Both hierarchies will be on the same computer so it isn't an IMAP > synchronisation tool I'm looking for. These are just directory trees > full of maildir mailboxes. How about copying files on disk? You could use "find" and/or "grep" to find the messages (= files); use hardlinks if you're sure that no message will be modified; use reflinks if the filesystem supports them; or simply copy from your current area to the archive again and again, if it's not too much data; use "fdupes" to remove duplicates (= identical content in differently named files) if there's a chance for duplicates being created. Cheers, Marcus -- Marcus C. Gottwald ยทยท @mcg:cheers.de
Re: Slightly OT: I'm looking for a tool to merge maildirs
On 24Jan2022 08:55, Chris Green wrote: >On Mon, Jan 24, 2022 at 10:24:41AM +1100, Cameron Simpson wrote: >> On 23Jan2022 10:46, Chris Green wrote: >> >This is a bit off topic for mutt specifically but it's about doing >> >things to the mail I read using mutt, so it's not *very* OT. :-) >> >> Had you considered a shell script which invokes mutt with -e to copy >> messages tagged by criteria from a mail folder to your archive folder? >> >That's a good idea, thank you. I have done things like this before >(i.e. an mbox to maildir script using mutt), not very fast but who >cares, it can take some hours for all I care. > >I think it may need a separate process to de-duplicate the destination >but that's OK. If you're merging from several folders to the archive, I expect so. Mutt can do that, BTW. Order by threads, tags duplicates (~=) and delete them. My folder hooks start like this: folder-hook . 'push "~=~T"' to do that: tag duplicates, delete (conditional on anything being tagged), untag tagged messages (~T). Cheers, Cameron Simpson
