Last Wednesday I travelled by bus to the King's Arms,Wallisdown road, arriving at 1845. None of the staff knew of the Linux meeting or of any computer meeting. I found a 'Functions room', which was locked. Rather than risk having to wait over an hour for the following bus but one, I left and caught the next bus back. Please advise me if I had misunderstood the place, date or anything else. Thanks, Ron
> From: dorset-requ...@mailman.lug.org.uk > Subject: dorset Digest, Vol 318, Issue 10 > To: dorset@mailman.lug.org.uk > Date: Sat, 6 Feb 2010 12:00:01 +0000 > > Send dorset mailing list submissions to > dorset@mailman.lug.org.uk > > To subscribe or unsubscribe via the World Wide Web, visit > https://mailman.lug.org.uk/mailman/listinfo/dorset > or, via email, send a message with subject or body 'help' to > dorset-requ...@mailman.lug.org.uk > > You can reach the person managing the list at > dorset-ow...@mailman.lug.org.uk > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of dorset digest..." > > > Today's Topics: > > 1. Re: md5sum mismatch (Steve hemingway) > 2. Re: Cloud Computing - Stallman's take (John Cooper) > 3. Re: md5sum mismatch (Ralph Corderoy) > 4. Hub software. (Simon O'Riordan) > 5. Re: Hub software. (Ralph Corderoy) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 05 Feb 2010 12:12:24 +0000 > From: Steve hemingway <ad...@itet.co.uk> > Subject: Re: [Dorset] md5sum mismatch > To: Dorset Linux User Group <dorset@mailman.lug.org.uk> > Message-ID: <4b6c0b28.7090...@itet.co.uk> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Does this help > http://adammooz.wordpress.com/2009/07/14/dcfldds-md5-vs-md5sum/ > > Steve > > On 04/02/2010 12:02, shane fail wrote: > > Hi, i am looking for any suggestions which will help with the following > > issue. > > I am trying to image a Western Digital 40gb hard-disk, to be added into > > the Autopsy tool as evidence on a case i have manufactured. > > The drive is connected via USB as an external drive and being imaged to > > the internal hard-disk of a ubuntu server. > > I have tried using:- > > dd if=/dev/sdg of=/home/sdg.dd bs=512 > > dd if=/dev/sdg of=/home/sdg.dd bs=2048 > > dcfldd if=/dev/sdg of=/home/sdg.dd > > md5sum /dev/sdg > > each command returns a different md5 hash. > > I have repeated the md5sum command several times between running the > > other commands and the md5sum is consistent with this command, so i know > > the original disk is not being written to. > > the dd and dcfldd commands always return: > > "amount of files" +1 files in > > "same amount" +1 files out. > > The hashes match between device and image file on each occurrence but > > none match the result returned by the md5sum command. > > > > I hope i am being clear enough here, and if anyone could shed some light > > on how this would happen, it would be greatly appreciated. > > > > kind regards, > > > > shane > > > > > > > > > > > > No virus found in this incoming message. > > Checked by AVG - www.avg.com > > Version: 9.0.733 / Virus Database: 271.1.1/2666 - Release Date: 02/03/10 > > 19:35:00 > > > > > > > ------------------------------ > > Message: 2 > Date: Fri, 05 Feb 2010 12:36:19 +0000 > From: John Cooper <l...@discoverlinux.co.uk> > Subject: Re: [Dorset] Cloud Computing - Stallman's take > To: Dorset Linux User Group <dorset@mailman.lug.org.uk> > Message-ID: <4b6c10c3.60...@discoverlinux.co.uk> > Content-Type: text/plain; charset=ISO-8859-1 > > On 05/02/10 10:56, Ralph Corderoy wrote: > > > > Hi Terry, > > > >> Who can swear that Google or Amazon might not have a similar > >> catastrophe as the years go by? > > > > I don't see a problem with web apps as long as the user's aware that > > they need their own copy of the data in a usable format, and that the > > site may fold tomorrow with no notice. For instance, if I used Gmail as > > my mail email client, then I'd look into doing reguarly syncs of the > > emails over IMAP back to my storage where they'd be backed up. > > > > But that's not really any different to running a webmail server myself; > > I'd still be backing up the data to different places and media, e.g. > > Amazon S3 over tarsnap. > > > > http://www.tarsnap.com/ > > > > WRT RAID, it seems the mantra "RAID isn't backup" is becoming more > > common now. > > > > Cheers, > > Ralph. > > > > > We live in the real world and nothing is generally free as companies > need to make money. So if you use any companies service, just try to > ensure you don't lock your self in. Sometimes you don't have a choice or > the alternative is too expensive. It is all common sense, so I use > Google because they offer superb web tools for "free" and it runs on > Linux. I accept they use my data/usage to make money in return for a > free service. > > Stallman is increasingly behind the times and lives in a idealists > world. Like Communism, sounds great but the actual reality doesn't work. > That is why Linux is so successful as Linus Torvalds lives in the real > world. > > If you use Thunderbird email client and IMAP, just ensure you have the > synchronising setting on so your messages are stored locally. To check :- > > Edit/Account Settings (Tools/Account Settings for Windows version) > > For each IMAP email you have set up check the > > "Synchronization & Storage"/"Message Synchronizing" > > is ticked. > > Backing up you home directory will ensure all your emails are backed up too. > > Moving to another email account is a simple drag and drop all you emails > from one account to another (or select copy for backups). > > Thunderbird has the ability to export you emails in most formats to > allow migration. Just install the ImportExportTools (Mboximport > enhanced) add-on. > > Local server RAID is not backup, at best is just protects against disk > failure. Someone hacking in to your server will have all the damage > replicated! However, what is it good for is being able to keep disk > backups when RAID1 mirroring is used, especially hot swappable disks. It > needs user intervention and a regular swap overs. Any problems, you can > have the whole server up and running very quickly. The combination of > this and file backups give the most flexibility. > > -- > -------------------------------------------------------------- > Discover Linux - Open Source Solutions to Business and Schools > http://discoverlinux.co.uk > -------------------------------------------------------------- > > > > ------------------------------ > > Message: 3 > Date: Fri, 05 Feb 2010 13:03:41 +0000 > From: Ralph Corderoy <ra...@inputplus.co.uk> > Subject: Re: [Dorset] md5sum mismatch > To: Dorset Linux User Group <dorset@mailman.lug.org.uk> > Message-ID: <20100205130341.325225...@blake.inputplus.co.uk> > > > Hi Steve, > > > Does this help > > http://adammooz.wordpress.com/2009/07/14/dcfldds-md5-vs-md5sum/ > > My understanding was that by the time the Linux kernel returns the data > to dd(1), there hasn't been any disc problem. IOW, the drive corrected > the issue itself, either by multiple reads, ECC, or whatever. If the > drive has to give up, it tells the kernel, and the kernel tells dd(1), > e.g. read(2) returns -1 with errno set to EIO. > > Sometimes, it seems the kernel will also have multiple goes, but the end > result is the same; no random data, or zeroes, is returned to dd in > lieu of pucker bytes. > > That's how dd(1) work, however, it seems dcfldd has options as to what > to do when the kernel says there's a read error, including continuing > through the rest of the drive. And it can vary how that affects the MD5 > digest. See > > http://www.forensicfocus.com/index.php?name=Forums&file=viewtopic&t=4992 > > for some of the gory details. > > I don't think I'd find myself using dcfldd. I'd not heard of it before. > TBH, I'd use GNU ddrescue(1), package gddrescue in Ubuntu, and its > --direct option to have it image the drive, passing O_DIRECT to the > kernel so it gets out the way. ddrescue tells you when there's bit of > disc that are a problem and skips over them. But then you run it again, > and again, increasing the number of retries until it, hopefully, gets > all the data. It can keep track, between runs, of what's been > recovered. It worked very well when I had a faulty drive to recover. > > Older versions don't have --direct but can do the same thing with raw(8) > setting up a raw device for the drive. The documentation is very > useful. > > Having got an image, I'd then get a digest for the image file. > > Cheers, > Ralph. > > > > > ------------------------------ > > Message: 4 > Date: Fri, 5 Feb 2010 18:53:26 -0000 > From: "Simon O'Riordan" <voluntar...@btopenworld.com> > Subject: [Dorset] Hub software. > To: "Dorset Linux User Group" <dorset@mailman.lug.org.uk> > Message-ID: <400b701764564e139cf490879a9ed...@simonpc> > Content-Type: text/plain; charset="iso-8859-1" > > Is there an Ian Rathbone on this list? Only I've been doing a little bit down > at Hub Software this week. > Wondered if you had any thoughts? > Simono > > ------------------------------ > > Message: 5 > Date: Fri, 05 Feb 2010 19:03:53 +0000 > From: Ralph Corderoy <ra...@inputplus.co.uk> > Subject: Re: [Dorset] Hub software. > To: Dorset Linux User Group <dorset@mailman.lug.org.uk> > Message-ID: <20100205190353.ccf225...@blake.inputplus.co.uk> > > > Hi Simon, > > > Is there an Ian Rathbone on this list? > > Not that I know of, sorry. This looks like him if you're trying to > contact him. > > http://www.ianrathbone.com/ > > Cheers, > Ralph. > > > > > ------------------------------ > > _______________________________________________ > dorset mailing list > dorset@mailman.lug.org.uk > https://mailman.lug.org.uk/mailman/listinfo/dorset > > End of dorset Digest, Vol 318, Issue 10 > *************************************** -- Next meeting: Dorchester, Tue 2010-03-02 20:00 http://dorset.lug.org.uk/ http://www.linkedin.com/groups?gid=2645413 Chat: http://www.mibbit.com/?server=irc.blitzed.org&channel=%23dorset List info: https://mailman.lug.org.uk/mailman/listinfo/dorset
