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How to allow easy editing of www-data owned files - or other workarounds?
by Chris Green 11 Dec '17

11 Dec '17

I've been trying to find a good solution to this problem for *years* but I'm still hitting problems with it. The current problem is that syncthing doesn't deal well with directories and files which have different owners on different systems. The essential problem is that web files which are manipulated by apache need to be owned by www-data but I want to be able to edit these files as well. In particular I have a wiki where I sometimes edit the files using the wiki (ownership ends up as www-data) and sometimes I edit them directly with an editor (ownership ends up as chris). Currently I use access control lists (setfacl) to make things so that both chris and www-data can both manipulate files in the wiki directory regardless of whether they are owned by chris or www-data but this isn't a perfect solution as the correct settings don't always get put on new files. What I really need is:- All the wiki files are owned by 'chris' (the wiki is rooted in my home directory and is synchronised across a couple of machines by syncthing). www-data can read/write/create files in the ~/chris/wiki directory but they will always be owned by 'chris'. Can anyone see a way of implementing this? ... or any other reasonable solution? -- Chris Green

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Magnetic resonance?
by Phil Thane 07 Dec '17

07 Dec '17

No this isn't a Linux question but you are the only techie people I know. If there is anyone from a Physics / Electrical Engineering background who can help with or proof read a short paragraph about wireless charging using electro-magnetic resonance, please get in touch off-list. Thanks. -- Phil Thane www.pthane.co.uk phil(a)pthane.co.uk 01767 449759 07582 750607 Twitter @pthane

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Strange postfix problem
by Laurie Brown 07 Dec '17

07 Dec '17

Hi all, Do we have any postfix experts on here? I have a very strange problem I'm struggling to resolve, and I'd appreciate some help. Cheers, Laurie. -- --------------------------------------------------------------------- Laurie Brown laurie(a)brownowl.com ---------------------------------------------------------------------

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Audio Question
by Ben Whyall 05 Dec '17

05 Dec '17

Hi I have a query which whilst not 100% linux I suspect someone might be able to help. I want to be able to somehow share speakers, and headphones/headset between two systems. Ideally I want to be able to decide what output is in use by ficking a switch or something similar not unplugging. Same with the input. One machine is a linux box and one is my work laptop (windows 10) What are peoples thoughts? Ben

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Firefox 57 woe
by Bev Nicolson 30 Nov '17

30 Nov '17

I had hoped to be prepared for whenever the upgrade to Firefox 57 occurred but it turns out I haven't been. This is because the Software Updater hadn't offered 57. Anyway, it seems I have lost all my ScrapBook pages. Or at least, the question I want to ask is, how can I find out for sure that I have? The home and computer directory have been searched for 'firefox data' but no dice. Bev.

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ssh_config file equivalents of command line options - how to find?
by Chris Green 30 Nov '17

30 Nov '17

I had a hard time recently working out what the ssh_config file equivalent of the -L command line option in ssh was. The man page happily tells you that "Port forwardings can also be specified in the configuration file." buut doesn't tell you *what* the configuration file equivalent is. (It's actually a bit obvious - LocalForward). Is there any documented way of finding the mapping? I'm now after the config file equivalents for -f and -N if there are any. -- Chris Green

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2600 meeting at 18:00 on Friday the 1st December.
by Viperfang 30 Nov '17

30 Nov '17

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

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How to *start* a desktop remotely? (for VNC)
by Chris Green 23 Nov '17

23 Nov '17

How can one *start* a desktop (in my case XFCE on xubuntu) remotely? I have set up VNC to acces my home machine desktop but since it's not actually running a desktop as it's been rebooted the VNC client shows me nothing. Help!? I have ssh access to my home machine. -- Chris Green

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4G data
by Phil Thane 19 Nov '17

19 Nov '17

Hi, Not really a Linux question, except that it'll be mostly Linux devices that use it... A few years ago when 4G was being tested in pilot areas, but not on the Llangollen canal, I wrote a piece for a canal/river boat magazine about using the internet afloat. At the time I borrowed some demo kit from suppliers and a boat from the Llangollen Wharf for testing and for photos. One option was a 3G USB dongle for a laptop, another was a 3G modem/router to create a WiFi hotspot. Or just use my old 3G smartphone and either a USB or WiFi 'tether'. Now down south I've got my own (very old and very cheap) boat and 4G is widely available. So should be great eh? Well not so much. As far as I can find out it is impossible to buy data only SIM cards with data contracts that last until the data is used. You have to buy 'bundles' of data/phonecalls/text and they expire after 7, 14 or 28 days. When I'm not on the boat I don't use 4G at all. When I am going away on it I have to guess how much data I might need and load up the SIM. Last time I did that the boat broke down, we came home early and £20 worth of data just expired at the end of the 28 days. With my old 3G phone (on PAYG) it simply used the same account for texts, calls or data - and I only enabled 3G when I really needed it. But it seems none of the phone providers will offer 4G that way. I can't see there's any technical reason, it's just that phone providers are conniving bastards. Does anyone know of one that has broken ranks with the cartel and will offer me what I want? -- Phil Thane www.pthane.co.uk phil(a)pthane.co.uk 01767 449759 07582 750607 Twitter @pthane

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Python GUIs
by Mark Rogers 10 Nov '17

10 Nov '17

I've only just really started to use Python, so this is very much a novice question. I'd like to create a simple Python GUI to manage a configuration file. I'll be developing it on Ubuntu but it'll need to run cross-platform, which is one reason I picked Python. Anyone here have any recommendations as to the best way to do this? Google gives me hundreds of options which is great but I'm after anecdotes from people I (feel I) know. -- 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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