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SVN server move
by Mark Rogers 05 Oct '15

05 Oct '15

Another "if only I could work out what to Google for..." question: I had an SVN server on old hardware, which I duplicated to new hardware and updated DNS. Then, from site (the only location any changes get made to the code) I performed a commit. However it turns out that the client had the old server IP in its hosts file (and wasn't using DNS) and was therefore committing to the old server not the new one. This has now been fixed. So what do I need to do from the client to re-send its committed changes to the new server? I believe there was actually only a single commit made if that helps. (The old server is now offline.) Mark -- 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 October
by Viperfang 05 Oct '15

05 Oct '15

ALUG Announce Please send announcements to Announce(a)lists.alug.org.uk Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce ----- Hello Norwich Aluggers, Our monthly ALUG Norwich social meeting will be held this Thursday, 8th October 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 http://lists.alug.org.uk/mailman/listinfo/announce

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Android sound recorder woe
by Bev Nicolson 05 Oct '15

05 Oct '15

4.2 Jellybean and I can’t record any sound on my phone. The app (one that came with the phone) looks as though it works but all I get from the speaker is white noise which is a shame as there have been some fabulously noisy birds tweeting away recently (pre migration, I assume.) I have tried switching it off and on again. Any ideas? A google doesn't seem to bring up any useful advice. Bev.

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File[system] encryption - what to use?
by Chris Green 04 Oct '15

04 Oct '15

I currently use two different file encryption methods, I'm wondering whether to simplify my life (slightly) by just using one. However I'm wondering if there is anything better out there, both as regards usability and effectiveness. I use encfs for one directory tree of files which I only access occasionally, I have to re-remember the command line way to decrypt them for use but it doesn't usually take long. :-) There are some security problems with encfs but for *file* encryption what else is there? For some files containing passwords I use vi[le]'s encryption which is known to be weak but it's very handy. I have a trivial script that wraps up the command sequence such that all I have to do is:- nnnn <name of encrypted file> ... and I get prompted for the password, then vi[le] opens the file and I can read it (and edit if if needed). I did try some encryption breaking software on the password files and it did a pretty bad job, it needs some 'clues' as in words that are present in the file to decrypt and, as the files don't contain many words as such, guessing these would be difficult. Are there any alternatives? File system encryption doesn't really help as the machine in question is turned on all the time with the desktop open so it would spend its whole time with the file system decrypted. It's not a laptop so it doesn't have a big risk of being stolen or lost. -- Chris Green

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What is wrong with this line in fstab?
by Peter Berrie 04 Oct '15

04 Oct '15

When I run fsck I get a message saying it failed to parse line 12 of fstab. Here is line 12: UUID=[as obtained from blkid] /home ext3 noatime defaults 0 2 It has noatime because its an SSD. Its wrapped the line of course, in the text editor its all on one line. What is wrong with it? Peter

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Disk errors causing system to lock
by Mark Rogers 01 Oct '15

01 Oct '15

This is something I've noticed before and I figured it was time I understood what was going on. If I try to access bad sectors on a failing disk my entire PC will often lock up at any point requiring disk access, even off good disks. Why is this? Eg: I am using ddrescue to recover data from a failing disk (so that disk isn't mounted and isn't in use in any way other than for data recovery). When it tries to read a bad sector, ddrescue will understandably get stuck for several seconds [1]. However, in another terminal window (or other application), whilst the bad sector is being attempted, anything which requires disk access (eg trivial operations like "ls" or command completion using tab) will hang until the timeout on the bad disk read. Why is this? I assume it's some kind of locking taking place but I don't understand why reading (eg) /dev/sdb should lock any operations on /dev/sda etc. And ref: [1]: What determines the time that it takes for an attempt to read a bad sector to time out? This is on an Ubuntu 14.04.1 desktop, although I've seen it elsewhere. Mark -- 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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2600 meeting at 18:00 on Friday the 2nd October.
by Viperfang 29 Sep '15

29 Sep '15

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

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Some questions in and around wifi management
by Chris Green 22 Sep '15

22 Sep '15

I have been spending a lot of time recently trying to get WiFi connections to work reliably. I'm learning, but mostly learning that I don't often know what I'm doing! :-) Firstly I don't think Network Manager is always particularly helpful, for example I'm using WiFi tethering at the moment but also want to turn it off sometimes and see if any local hotspots are available. There seems no way to make Network Manager re-scan, it obstinately continues to show my tethering WiFi when I *know* it's turned off. This rather reduces my confidence in other signals it shows. I have played with using wpa_gui which seems to be more able to do what I want but I don't really understand how it interacts (or not) with Network Manager. Could I uninstall Network Manager and use wpa_gui exclusively? (However then I don't have a way to configure a hard-wired ethernet connection if there is one) E.g. does the 'Connect' button in wpa_gui do all that's necessary or would I have to do the DHCP client, routing, etc., in adddition? Are there any good tutorials about this sort of stuff, or even books? I don't want anything *too* basic, I can get our domestic WiFi working fine without a problem, in that sort of situation Network Manager does a pretty good job. It's when things get a bit more difficult with weaker signals (and sometimes *lots* of them) that I need some help. Oh, and another problem I'm having. I have a Raspberry Pi with an external USB WiFi (long wire with a WiFi with aerial on the end of it) and I'm using some direct manipulation of wpa_supplicant (i.e. built a custom configuration with details found on the 'net) to get it to connect to a WiFi hotspot that uses EAP-SIM authentication. This also involves reading a key from a USB SIM card reader. Much to my surprise I actually got this to work, however my attempts to automate it at system power-up have not worked at all well. I can repeatedly get it to work manually, i.e. by entering commands but I suspect some of the commands fire off background processes and thus automating it is harder than just doing the same thing from rc.local. I have done quite a lot of stuff with rc.local in the past and also with cron jobs and I think I know most of the normal wrinkles. There's just something more going on here, particularly with the wpa_supplicant stuff. Any/all help would be very welcome. -- Chris Green

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Shorewall messages
by Chris Walker 19 Sep '15

19 Sep '15

Hello, If I run dmesg, it scrolls away with loads of this type of message :- [ 9958.682112] Shorewall:net-fw:DROP:IN=enp6s0 OUT= MAC=40:61:86:05:f9:31:00:24:a5:bd:b4:dc:08:00 SRC=192.168.1.1 DST=192.168.1.11 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=53299 DF PROTO=TCP SPT=43075 DPT=80 WINDOW=5840 RES=0x00 SYN URGP=0 In an effort to fix this, I've looked at the installed packages and I see that not only do I have shorewall installed, but also shorewall6. Should I have both? I've looked online at this page to start with - http://www.shorewall.net/manpages6/shorewall6-zones.html - but I can't see which bits of the system are causing the error and hence which bits I should change. So, what can I do to suppress these messages as they're filling up the disc? Any help appreciated. -- __ __| |_ __ __ .----------------------------------------------. / _/ _` \ V V / | mailto:alug_cdw@the-walker-household.co.uk | \__\__,_|\_/\_/ |______________________________________________|

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mailman/apache2.4/cgi-bin issues
by Jenny Hopkins 09 Sep '15

09 Sep '15

Hullo, I'm struggling to get mailman up and running again after changing a virtual server to a new platform, upgrading to debian jessie in the process. I've made the permissions on the new platform for /usr/lib/cgi-bin/mailman identical: (e.g.):-rwxr-sr-x 1 root list 10K Apr 6 16:45 admin I've altered /etc/group to match the old server like this: list:x:38:lurker lurker:x:109:list,www-data /etc/mailman/apache.conf contains these lines: ScriptAlias /cgi-bin/mailman/ /usr/lib/cgi-bin/mailman/ Alias /pipermail/ /var/lib/mailman/archives/public/ Alias /images/mailman/ /usr/share/images/mailman/ <Directory /usr/lib/cgi-bin/mailman/> AllowOverride None Options ExecCGI AddHandler cgi-script .cgi Require all granted </Directory> <Directory /var/lib/mailman/archives/public/> Options FollowSymlinks AllowOverride None Require all granted </Directory> <Directory /usr/share/images/mailman/> AllowOverride None Require all granted </Directory> My first issue is that all site links point to {server}/cgi-bin/mailman/{file}, which gives a "You don't have permission to access /cgi-bin/mailman/create on this server." warning, but if I manually change that to {server}/mailman/{file}, it works. The second issue is that although the link to the archives displays the messages fine, the overview mailman doesn't seem to think I have any existing lists, although /var/lib/mailman is fully synced from the old server. I can't seem to find any file that holds this information. (There is a third that in when I click on one of the mailing list titles, the actual message can't be found, but that's probably moving on to lurker issues). Any ideas welcome! Thanks, Jenny

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