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Re: [ALUG] Anyone know how to use gpg-zip?
by Ewan Slater 14 Jul '16

14 Jul '16

> I want an encrypted archive that uses the passphrase I give when encrypting and requires the > passphrase again to decrypt it. What about 7zip easy, AES-256 symmetric encryption (see below): Cheers, Ewan ***create file*** ewans@chatterbox:~/Downloads$ 7z a -p commentary.7z commentary.txt 7-Zip [64] 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18 p7zip Version 9.20 (locale=en_GB.utf8,Utf16=on,HugeFiles=on,1 CPU) Scanning Creating archive commentary.7z Enter password (will not be echoed) : Verify password (will not be echoed) : Compressing commentary.txt Everything is Ok ***bad password*** ewans@chatterbox:~/Downloads$ 7z e commentary.7z 7-Zip [64] 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18 p7zip Version 9.20 (locale=en_GB.utf8,Utf16=on,HugeFiles=on,1 CPU) Processing archive: commentary.7z Enter password (will not be echoed) : Extracting commentary.txt Data Error in encrypted file. Wrong password? Sub items Errors: 1 ***good password*** ewans@chatterbox:~/Downloads$ 7z e commentary.7z 7-Zip [64] 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18 p7zip Version 9.20 (locale=en_GB.utf8,Utf16=on,HugeFiles=on,1 CPU) Processing archive: commentary.7z Enter password (will not be echoed) : Extracting commentary.txt Everything is Ok Size: 40193 Compressed: 9539

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Anyone know how to use gpg-zip?
by Chris Green 14 Jul '16

14 Jul '16

I'm trying to create an encrypted archive of some files in a ditrectory. It seems like gpg-zip should do what I want but I can't get it to do simple symmetric encryption. The trouble is that even though I'm specifying --symmetric gpg-zip still insists on being given a user:- chris@esprimo$ gpg-zip --encrypt --symmetric --output fred glomtest Enter passphrase: Repeat passphrase: You did not specify a user ID. (you may use "-r") Current recipients: Enter the user ID. End with an empty line: chris Current recipients: 2048g/8FC95300 2015-10-05 "chris <chris@esprimo>" Enter the user ID. End with an empty line: File `fred' exists. Overwrite? (y/N) y I can then just decrypt the archive with:- gpg-zip --decrypt fred no need for the passphrase! That's useless for what I want. I want an encrypted archive that uses the passphrase I give when encrypting and requires the passphrase again to decrypt it. Otherwise anyone walking up to my computer when it's turned on (and I'm logged in) can decrypt the archive. Can gpg-zip do what I want and, if so, how? Otherwise what are the alternatives? -- Chris Green

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Lubuntu install
by Chris Walker 12 Jul '16

12 Jul '16

I have a Pentium machine here and I'm trying to install Lubuntu on it but without success. I've looked at this page - https://wiki.ubuntu.com/Lubuntu/AdvancedMethods and have added the -- forecepae command to the end of the command string but all I get is a cursor in the top left of the screen and nothing else happens. I've had other distros working on the machine - I installed MX last week - but thought I'd have a play with something else but I'm not having any success. What's the remedy here? -- __ __| |_ __ __ .----------------------------------------------. / _/ _` \ V V / | mailto:alug_cdw@the-walker-household.co.uk | \__\__,_|\_/\_/ |______________________________________________|

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[ALUG Announce] ALUG Norwich Pub Meet Thursday 14th July
by Viperfang 11 Jul '16

11 Jul '16

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, 14th July 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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Search all text files for a text string
by Mark Rogers 09 Jul '16

09 Jul '16

Is there a quick way to search all text files for a string? By "text file" I mean ASCII files, like log files, config files etc, but excluding binaries like executables, database files, etc? What I want is something like: find / -type a -exec grep 192.168.100.1 \{\} \; .. or similar, except that I made up "-type a" for ascii. (I'm trying to find all places that an IP address is mentioned so that I can change ones that need to be changed.) -- 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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DD LUKS USB Drive
by steve-ALUG＠hst.me.uk 06 Jul '16

06 Jul '16

Hi Clever People! I have a USB drive that's encryped and mounted using LUKS. It's used to hold backups (using backuppc and another backup system). This drive appears to be a bit flaky so I'm going to have to replace it. My silly question is, if I use dd to copy the entire contents from the old disk to the new one, am I going to be able to mount the new one via LUKS and it be able to access the data or is there some hidden gotcha that will prevent this from working? Cheers Steve

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MicroSD card read issues
by Mark Rogers 30 Jun '16

30 Jun '16

Can anyone shed light on what the following entries in /var/log/syslog actually mean? Jun 16 11:43:45 mark-pc kernel: [92204.212656] sd 11:0:0:2: [sdf] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE Jun 16 11:43:45 mark-pc kernel: [92204.212669] sd 11:0:0:2: [sdf] tag#0 Sense Key : Hardware Error [current] Jun 16 11:43:45 mark-pc kernel: [92204.212675] sd 11:0:0:2: [sdf] tag#0 Add. Sense: No additional sense information Jun 16 11:43:45 mark-pc kernel: [92204.212683] sd 11:0:0:2: [sdf] tag#0 CDB: Read(10) 28 00 06 87 47 30 00 00 08 00 Jun 16 11:43:45 mark-pc kernel: [92204.212688] blk_update_request: I/O error, dev sdf, sector 109528880 Jun 16 11:43:45 mark-pc kernel: [92204.212696] Buffer I/O error on dev sdf1, logical block 13690854, async page read Background: This a pretty new Sandisk [1] 128GB MicroSD (UHS) card, taken out of my phone and plugged into my PC via a card reader (USB2). A previous card caused issues in my phone so I replaced it with this one, and it now is not behaving well (usually OK but sometimes if I try to look at photos on the card the phone will lock up temporarily). I'm trying to back everything up onto my PC so I can copy it across onto a Samsung card to see if that's better. The above errors crop up periodically in syslog whilst copying. Is the issue the card, the card reader, the PC, the drivers, ...? [1] I believe it to be genuine Sandisk, it was purchased from Amazon. Advice on how to verify it's not a fake welcomed! -- 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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Raid10 degraded
by John Cohen 30 Jun '16

30 Jun '16

I have a small server Thinkserver ts140 for serving files via sftp to my colleagues, as well as a few other services. I run ubuntu 14.04 from a 500gig drive backed up nightly offsite, and have a separate raid10 array 4x 4TB (WD Reds) for the storage. They've been running fine for over a year until yesterday, when I received an email saying the array was degraded. " A DegradedArray event had been detected on md device /dev/md/0. P.S. The /proc/mdstat file currently contains the following: Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid10 sdb1[0] sde1[3] sdc1[4] 7813772288 blocks super 1.2 512K chunks 2 near-copies [4/3] [UU_U] unused devices: <none>" First thing I did was backup the most important files to an external drive via rsync. (I have run out of space for a full 8TB external drive backup and can't afford to buy any more drives just now) We also keep these more important files offsite) mdadm -D /dev/md0 shows that my third drive sdd1 was removed. I checked the smart tools to see if the drive was failing and saw nothing, even after running a self-test. I didn't check for disk errors on the drive itself as I'm not sure how this works in a raid setup. I did try re-adding the disk to the raid and it immediately picked it up and started recovering. This was the mdadm --examine shows of the raid status *before* I tried re-adding the removed drive: http://pastebin.com/P4Q4YhN7 I can't see anything wrong here, the only difference I saw was in the sdd section showing Array State AAAA instead of AA.A as the others were (. = missing) This morning I woke up to another email with the same message, and the disk sdd1 was removed again. I am adding the drive again to see what happens, but suspect the same results. Here's the mdadm --detail now: http://pastebin.com/CkBm6SbH dmesg since a recent reboot, with a lot of the repeats taken out: http://pastebin.com/jzWnYizV 1) Should I run any more tests on the drive itself? Any specific suggestions? Do you think it could be a hardware fault unrelated to the actual drive? I'm nervous of starting to swap things around to test this. 2) The drives are in warranty so I have contacted WD to ask for a replacement, although if the SMART tests don't show anything I don't know if they'll replace the drive 3) Should I tell my colleagues we're going to have to switch the machine off until the new drive arrives? (I am paranoid of a second drive failing before I get a new one) Any advice as to what I could do to test the drive/setup is appreciated. Please be aware I'm no linux guru, my field is in something completely different and I just happen to love learning about linux and have found it very useful to complement my office setup and work. Many thanks John

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2600 meeting at 18:00 on Friday the 1st July.
by Viperfang 28 Jun '16

28 Jun '16

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

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Synchronising a few 'isolated' files between systems - how?
by Chris Green 23 Jun '16

23 Jun '16

I have set up syncthing on my systems and it works very well for folders where one wants to synchronise all the files. However I have a few what one might call 'isolated' files that I want to synchronise and I can't see any easy way to do this with syncthing. It's possible to use syncthing's .stignore file to do it but it's very clumsy and one would need to edit several files just to add one file to the list to be synchronised. I have pondered putting the 'isolated' files in a directory by themselves (which syncthing can synchronise) and having symbolic links to them from where they are actually used. However adding one file to the list would mean edits in several places. Any better ideas anyone? -- Chris Green

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