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10364 discussions

Nextcloud, Evolution and HTML 301 error
by Phil Thane 18 Feb '18

18 Feb '18

Hi, I'm baffled. I have a Nextcloud server and one of the things I use it for is Contacts sync. It worked fine (as far as I know) until yesterday when I tried to save a new contact from an email in Evolution. When I try to save I get a 301 error ie the server address has changed. Except it hasn't, I've checked. I can access the server via the web interface and the Nextcloud client still syncs files OK. Suggestions? -- Phil

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PDF manipulation: splitting A3 into A4 consitutent parts
by Mark Rogers 18 Feb '18

18 Feb '18

I have a few PDFs which are scanned newsletters. Printed, each is a sheet of A3 folded to create a 4-page A4 newsletter. Scanned, what I have is a PDF comprising two A3 pages (each therefore having two A4 pages on it). As a result, the PDF when viewed effectively shows pages in the order 4 (back page), 1 (front page), 2, 3. (That's one A3 sheet containing pages 4&1, and another containing 2&3, as a two-page PDF.) I want to turn this into a new PDF comprising four A4 pages in the obvious 1,2,3,4 page order. Suggestions? If the pages were A4 I could use pdftk: pdftk in.pdf cat 2-4 1 output out.pdf .. but pdftk can currently only "see" two A3 pages so that won't work. Another consideration: The scan appears to have included an OCR layer which makes much of the text content searchable and I'd like to not lose that. The original newsletters are lost to time so I can't rescan. (This exercise is for a website that's creating a historical archive of which these PDFs will form a part.) -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER

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Libreoffice Writer URLs
by Mark Rogers 13 Feb '18

13 Feb '18

Apologies as not strictly a Linux question, but: Does anyone know how to remove the formatting of URLs in a Libreoffice Writer (.odt) document when printed, without removing them for other purposes (eg PDFs)? There's little point underlining and changing the colour of a link in a printed document that you can't click on, but I'd like to leave them clickable (and marked as such) in PDFs where they do serve a purpose. I feel like I must be missing something. -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER

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[ALUG Announce] ALUG Norwich Pub Meet Thursday 8th February
by Viperfang 06 Feb '18

06 Feb '18

ALUG Announce Please send announcements to Announce(a)lists.alug.org.uk Unsub, change settings via https://lists.alug.org.uk/mailman/listinfo/announce ----- Hello Norwich Aluggers, Our monthly ALUG Norwich social meeting will be held this Thursday, 8th February at The Coach and Horses (82 Thorpe Road, Norwich, NR1 1BA). The meeting officially starts at 8pm, although some people may arrive earlier. More information on those people can be found on the list and the IRC channel. If you are unsure if you will recognise us then make yourself and your intent to attend known by either posting on list or visiting us on IRC so we can look out for you rather than hiding in the corner. Optionally you could ask at the bar if they know where the geeky computer weirdos are and they'll point you in the right direction (seriously!). Another possibility is look for heaps of electronics on a table that may possibly look like movie props that would used for detonating explosives. Feel free to bring electronics/laptops/gadgets to the meet, you will by no means be alone. Ben Bewick aka Viperfang NB: This mail is automated, please refer to the usual sources for more information. ALUG Contact Details: Website : http://www.alug.org.uk/ IRC : #alug on irc.alug.org.uk List : http://lists.alug.org.uk/mailman/listinfo Twitter : http://twitter.com/anglianlug Identica: TBA Facebook: http://www.facebook.com/group.php?gid=2381613902 ----- Send discussion replies to main(a)lists.alug.org.uk (Reply-To set) Unsub, change settings via https://lists.alug.org.uk/mailman/listinfo/announce

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How to get a script to ask for ssh login password only once?
by Chris Green 05 Feb '18

05 Feb '18

I have a script that runs ssh several times to do some manipulations on a remote system and also runs rsync to the same remote system two or three times. Is there some way to get a single entry of the ssh password to work for all the ssh and rsync calls? I *could* use key authentication but that has some downsides so I'd prefer to remain with using a password. One approach is to use 'ControlMaster auto' in the .ssh/config which means all subsequent logins will re-use the first one, this however means that I need to have a 'persistent' first ssh. I've managed this by doing 'ssh -fN esprimo bash' at the start of the script but this then leaves the ssh running for ever and I'd prefer that not to happen. Has anyone got any better ideas? -- Chris Green

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2600 meeting at 18:00 on Friday the 2nd February.
by Viperfang 30 Jan '18

30 Jan '18

Quick heads up about this months Norwich 2600 meeting, more info at http://www.norwich2600.co.uk

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New Server Installation Traditional BIOS mode or EUFI mode?
by steve-ALUG＠hst.me.uk 29 Jan '18

29 Jan '18

Having brought myself a shiny new Lenovo Thinkserver https://www.serversdirect.co.uk/p/1182461/lenovo-thinkserver-ts150-intel-pe… and tracked down all the cables and caddies required to make it run... I started installing *buntu on it, and then I had a thought, stopped and now not sure of the best way to go. It can run in EUFI mode, or traditional BIOS mode. Any thoughts? I've never had a machine with EUFI. Is that the way to go? Any gotchas? Any thoughts or experience appreciated. Cheers Steve

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autoreply to email for non-existent users - (resent because I sent the previous one from the wrong email address!)
by mick 29 Jan '18

29 Jan '18

(Apologies to list maintainers. I'm an idiot. Please delete the earlier mail sent from the wrong address). Hi Guys Some advice please. I own a bunch of domains, not all of which have many (or in some cases, any) real users. One domain name in particular is (accidentally) very similar to a domain in use by a UK QUANGO (one character different). Consequently my domain receives a fair amount of email intended for the other. Naturally I just bounce all email to my domain with a "550 5.1.1 <blah@domain>: Recipient address rejected: User unknown in virtual mailbox table;" When I first set up mail on the domain (back in 2011) and started to get lots of mail I did some research and found the QUANGO which should be getting the email. I contacted them and told them about the issue and suggested that they let all their contacts know about the problem. Herein, of course, lies a difficulty. Apart from their regular correspondents, they cannot know in advance who will email them. I left it, and figured that over time the volume of email would tail off as people caught on. But now, seven years later, I'm /still/ getting mail to my domain which should go elsewhere and which I simply bounce. My logs get cluttered with the bounce message and the end user may or may not know what to do about the failed delivery since I'm just telling them that the user doesn't exist, when they may think he does. Now to the question. I'm building a new email server (postfix) and I'm moving some of my doamins to that new server. Since it's a nice clean sparkly new server I'd like to ensure that I don't just move an existing problem from one MTA to another. So I've been pondering whether (and if so how) to implement an autoreply mechanism for my domain which sends a friendly message to the sender saying something like "Hi, you may have a typo in your email address for blah@mydomain. I run that domain and I get a lot of email there which is probably intended for blah@otherdomain. You may like to try resending to the proper address." I think I could probably set up something using vacation with a catchall alias for any address at my domain. But I'm aware of the potential for a complete balls up if I get this wrong. If "bad people" (TM) find that my mail system will autorespond to any address at a particular domain it could be used as a spamming mechanism which might get my sparkly new MTA blacklisted. I don't want that. So - any advice on the best approach? Or should I just suck it up as I currently do and not bother trying to be helpful? Cheers Mick --------------------------------------------------------------------- Mick Morgan gpg fingerprint: FC23 3338 F664 5E66 876B 72C0 0A1F E60B 5BAD D312 http://baldric.net/about-trivia ---------------------------------------------------------------------

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RAID: mdadm vs brtfs raid
by steve-ALUG＠hst.me.uk 28 Jan '18

28 Jan '18

I was reading the latest Linux Format which is talking about building a new machine. It really surprised me when talking about RAID when it suggested to use btrfs instead of mdadm. Even if I use mdadm, I may try out btfs instead of ext4. I was wondering if anyone had any thoughts? Steve

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Combining log files
by Mark Rogers 26 Jan '18

26 Jan '18

I have many gigabytes of .gz compressed log files, generally in very small files. For example, one file only contains entries from 20180114-205608 to 20180114-205746 (about 90s), and is about 350k compressed. I want to extract these and combine them into one file per day*, compressed. Log file entries are in date/time order, and filenames are easily sorted into date/time order too, so I can easily generate a stream of log entries in date/time order from which to work. So I assume that what I need is something to pipe that to that will look at the date of each line, and if it's changed close any existing output file, open a new one (gzipped), and write to it until the date changes or EOF. I could write something like that in a scripting language (for my sins PHP would be easiest, Python I'm getting better at, bash could likely do it too). But given the volume of data are there any suggestions as to the "right" tool to use? Is this a job for awk or similar? As an aside: The files are all archived on my Linux box, but they're sourced from a Windows box, so a cross-platform solution would allow me to do it on the host; transferring lots of small files isn't as efficient as a few big files (athough I have archives going back years on my Linux box to work through first). * I say a file per day but ideally I could be flexible about the period - day is most likely and probably easiest though -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER

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