- Roundtable - muug.ca

Fwd: O'Reilly online shop no longer selling individual books and videos
by Hartmut W Sager 29 Jun '17

29 Jun '17

Huh??? I am stunned! And, it's "as of today". No prior notice? What happened there so suddenly? I am also somewhat confused by the alternative ways of buying O'Reilly books. I don't know what this Safari thing is all about for buying books - I thought Safari is an alternate browser. Hartmut W Sager - Tel +1-204-339-8331 ---------- Forwarded message ---------- From: O'Reilly Media <oreilly(a)post.oreilly.com> Date: 28 June 2017 at 17:57 Subject: Changes to the O'Reilly shop To: hwsager(a)marityme.net [image: And important things about your O'Reilly account] Hartmut W, Things are changing at the O'Reilly online shop—as of today, we are no longer selling individual books and videos via shop.oreilly.com <http://post.oreilly.com/rd/9z1zgfkjioneh7iokn0pr9j4vufbndd548d8vlvbg38>. Of course, we'll continue to publish books and videos on the topics you need to know, like data science, product management, and leadership—and you'll still be able to buy them at Amazon and other retailers. And these important things about your O'Reilly account are staying exactly the same: - You'll still have access to every ebook and video listed in "Your Products" on your O'Reilly account page. - We'll alert you when those products are updated, and you can download the revised version from the "Your Products" page. - You can still send the O'Reilly ebooks you've purchased to Dropbox and/or Google Drive. Of course, *every O'Reilly book and video (including O'Reilly conference sessions) is available instantly on Safari*, plus: "Safari turbo-charged my learning. Instead of limiting myself to a few good books a year, I now have access to a dream library." – Arthur Burkhardt, Digital Analytics Consultant, Accenture - *thousands more* from other great publishers like Packt, Pearson, and Wiley - *early access* to upcoming O'Reilly books - *training* in TensorFlow, Python, JavaScript, and more—delivered live, online, by real experts in real time, and only available on Safari - *on-demand Learning Paths* on data science, people management, design thinking, etc. "Safari turbo-charged my learning. Instead of limiting myself to a few good books a year, I now have access to a dream library." – Arthur Burkhardt, Digital Analytics Consultant, Accenture If you like Spotify and Netflix, you'll love Safari (1.8 million people already do)! And for the cost of seven books a year, you'll have access to the *entire* O'Reilly catalog. *Sign up for an annual membership today—for one week only, we'll throw in a $100 Amazon gift card* to spend on whatever you want. And Safari membership has a 14-day money-back guarantee, so what do you have to lose? GET STARTED WITH SAFARI <http://post.oreilly.com/rd/9z1znvuii7aq6st99cl687k3p8bldslk2qj3npnl36o> O'Reilly reserves the right to cancel fulfillment of this promotion in the event of a participant's apparent fraud, violation of law, or cancellation of membership. Void where prohibited. Gift card will be issued via email after 30 days' continuous membership. This offer is not transferable and does not apply to current Safari members, multi-user, or enterprise accounts. Offer applies to annual memberships for individual subscribers only. Offer expires July 6, 2017. You are receiving this because you're a customer of O'Reilly Media, or you've signed up to receive email from us. We hope you found this message to be useful. However, if you'd rather not receive future emails of this type from O'Reilly, please manage your preferences or unsubscribe here. To ensure delivery to your inbox (not bulk or junk folders), please add *oreilly(a)post.oreilly.com* <oreilly(a)post.oreilly.com> to your address book. O'Reilly Media, Inc. 1005 Gravenstein Highway North, Sebastopol, CA 95472 (707) 827-7000

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laptop HD's
by Dan Keizer 10 Jun '17

10 Jun '17

OK, so first off, thanks for all your guys feedback on my prior posting about a young guy's interest in a computer gaming system. I passed along the info - not sure where/how far it went ... good info anyways. on another front, the laptops i've purchased for myself/house I've replaced the spinning metal with SSD's. I've then given some of these spinning metals away. Now, there's an interest to get a couple/few spinning metal drives to put into laptops for casual use for some other peoples ... Does anyone have any source for older laptop hd's ... even as small as 20gb or so would be fine (they are probably hard to find too) ... there's a couple i'm looking for in the next while ... Thanks. Dan.

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OpenBSD In Azure
by John Lange 09 Jun '17

09 Jun '17

As a bit of an update to my presentation last month; I can't recall if I mentioned that OpenBSD was on the Azure road map or not (I meant to), but in any case, both OpenBSD and FreeBSD images are now available: https://www.theregister.co.uk/2017/06/09/open_bsd_support_comes_to_azure/ -- John Lange

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MUUG Meeting, June 13, 7:30pm -- BSDCan 2017 Report
by Gilbert E. Detillieux 06 Jun '17

06 Jun '17

*** Please note the updated meeting location below *** The Manitoba UNIX User Group (MUUG) will be holding its next monthly meeting on Tuesday, June 13. The meeting topic for this month is as follows: BSDCan 2017 Report Adam Thompson will be reporting on his recent visit to the 14th annual BSDCan. BSDCan, a BSD conference held in Ottawa, Canada, quickly established itself as the technical conference for people working on and with 4.4BSD based operating systems and related projects. The organizers have found a fantastic formula that appeals to a wide range of people from extreme novices to advanced developers. Daemon-Dash: rsync In the Daemon-Dash segment, Wyatt Zacharias will demo the rsync daemon. When run as a daemon, rsync allows clients to directly connect and retrieve files, without the need for SSH encapsulation or shell access. The group usually holds its meetings at 7:30pm on the second Tuesday of every month from September to June. (There are no meetings in July and August.) Meetings are open to the general public; you don't have to be a MUUG member to attend. ****************************************************************** Please note our *NEW* meeting location for this month: *Room 2L17* Lockhart Hall, University of Winnipeg, entrance on Ellice Ave. between Spence St. and Balmoral St. Parking is available on the surrounding streets and in the lots on nearby streets. Look for signage once you're at the building, or ask a security guard. ****************************************************************** For more information about MUUG, and its monthly meetings, check out their web server: https://muug.ca/ Help us promote this month's meeting, by putting this poster up on your workplace bulletin board or other suitable public message board: https://muug.ca/meetings/MUUGmeeting.pdf -- Manitoba UNIX User Group E-mail: <gedetil(a)muug.ca> c/o Gilbert E. Detillieux Web: http://muug.ca/ University of Manitoba Phone: (204)474-8161 Winnipeg MB CANADA R3T 2N2 Fax: (204)474-7609

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Small switch recommendation.
by Sean Cody 03 Jun '17

03 Jun '17

Can anyone recommend a small switch (say 8 ports, reasonably priced) with the following properties: - Gigabit - Port Mirroring (at least 3 sets of 2 port mirrors) - SNMP (for bandwidth monitoring) - Management (SSH or Web is fine especially if SNMP is available as well). - Native IPv6 (nice to have, since my env is fully dual-stack) Was looking at the netgear 8 port thingies but I don't think they support SNMP and I'm too lazy to manually check usage with a web-ui. I've also experienced some issues with older netgear switches (purple ones) where MAC address per-port assignment was horribly broken (same MAC applied to all ports in MGMT & SNMP interfaces). Originally looking at the Ubiquiti switches to replace a 24 port unmanaged switch but realized I could just deploy this tactically with a smaller separate switch instead. The use is to be able to monitor usage as well as being able to tap specific points without futzing with cabling. I may end up just going fully managed (for device location hunting) but could use some product suggestions from the above described scenario. -- Sean

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big Intel bug with SMT firmware
by Trevor Cordes 17 May '17

17 May '17

Intel has announced a big (VCSSv3 8.4 and 9.8 critical) bug in their AMT/ISM/SBT technologies, which are mostly only in their business lines. Most consumer desktops will not be affected. It seems more laptops than you would think are affected so if you have an Intel-based laptop from 0-6 years old you might want to check this out. If you have a desktop with a "Q" chipset (aka vPro) then you also are probably affected. I'll repeat this so as to not cause undo alarm: MOST HOME DESKTOP SYSTEMS ARE *NOT* AFFECTED. Looks like this flaw could let an attacker take full control of the system, probably including remote BIOS/desktop and/or OS image control (not sure about file system?). Not sure if exploits are actually in the wild yet, but once they are, just using any public wifi could get you hosed. And this isn't just a Windows user problem like all the RansomWare: this one is at the hardware/BIOS level so it affects all OS users. Patched firmware coming soon, or are already out. https://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00075&lang… Here's direct links to the list of affected systems for brands relevant to my customers (other brands are at the link above): https://support.lenovo.com/ca/en/product_security/len-14963 https://www.intel.com/content/www/us/en/support/boards-and-kits/000024181.h… https://www.asus.com/News/uztEkib4zFMHCn5r Note, for Lenovo laptops: W series W520 and up are affected, and most T and X series. There are Windows (and maybe Ubuntu) programs you can d/l to check if you have an affected system. Check the firmware site for your system often until a fix is posted and then apply it. -- Your friendly neighbourhood MUUG security announcer

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config setup
by Trevor Cordes 11 May '17

11 May '17

Forwarded on behalf of Dan Keizer. Remember folks, keep your attachments to the mailing list as small as possible. I shrunk the pdf from 500k to a 69k single jpg (it was just embedded jpg's anyhow). === Dan Keizer asked === Well, I decided not to ask this at the round table yesterday as it would have taken too much time and have lots of possible options ... a friend has a friend who has a 14 year old teenager looking at building a gaming machine .. he put together some info and this friend is looking for some feedback I've attached a pdf of what they were looking at as options - not sure where the pricing was scraped from -- but with guys on-line who are in the business would have a better idea ... What's your guys takes on this? I'm not into gaming machine configurations ... Dan.

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Linux in Azure
by John Lange 11 May '17

11 May '17

Thanks everyone who attended my Linux on Azure presentation last evening, but I guess I gave my presentation a day early. Microsoft just announced today (at Build) a bash shell built into the Azure portal! Now instead of spinning up a linux virtual machine, or installing azure cli on your linux laptop, you can instead use bash to manage your entire Azure environment right from any browser. Plus, an Azure app for iOS and Android was also announced and it also includes the bash shell so you can use bash to manage Azure from a mobile device. Would have made a great demo. Perhaps at a future meeting. And just a side note, Azure bash shell has been released before the PowerShell module. -- John Lange

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Re: [RndTbl] Second screen view from first screen
by Trevor Cordes 11 May '17

11 May '17

At the meeting the other day a member asked about an interesting problem. He has 2 monitors on a linux box and one monitor is in a different room. He wants to be able to see what is on the other-room monitor on the first monitor (monitor the monitor??). Got the ol' hamster spinning. My hunch that VNC could do it is correct. Here's the solution I just hacked out: 1. install x11vnc package (dnf install x11vnc in Fedora/RH/CentOS; something similar in other distros). install tigervnc package (or any other compatible vnc client). 2. as root: x11vnc -storepasswd -- enter in a pw 3. as root (*might* work as normal user if the stars are aligned?): x11vnc -many -usepw -clip xinerama1 -viewonly -scale 1/4 \ -auth /var/run/lightdm/root/:0 -display :0 4. as normal user: vnc localhost This will put a little 1/4 scaled copy of the 2nd monitor on your current one. IMPORTANT: the above -auth voodoo works only for lightdm display manager setups like I use on XFCE. Any other DM will need slightly different voodoo, which you can probably divine by poking around /var/run for dm-sounding entries. There's probably plenty of google hits to help you too. Notes: - Change xinerama1 to 0 depending on which xinerama screen is which. Any modern non-tweaked linux will use xinerama under the hood for any multi-monitor setup. If for some reason you don't have xinerama then -clip lets you specify actual X,Y WxH coords instead! Neat - -viewonly is probably what you want, and without it I lost keyboard repeat and if I ventured into the vnc window with the cursor it was very hard to get out again as I entered some sort of recursive dimension effect where many have perished. - -scale adjust to make it as big/little as you want. Now, for the ambitious reader: figure out a way to do this with just X (no VNC). I'm thinking something that works like the old xmag but in reverse and with a stationary target? If xmag can do its magic, surely something like this is possible. For bonus points, figure out how you can do this in wayland. BZZZZZZZ. Trick question, it's almost certainly impossible (though I could be proven wrong). If you're using wayland (i.e. new install of F25) then read the docs on how to switch back to X and then curse wayland three times while spinning in circles on the spot. Good for the soul. (P.S. You might want to block external port 5900 (but not loopback!) with iptables on your box if it's world-accessible... default vnc security stinks.)

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Big-endian RAID5 recovery problem
by Adam Thompson 07 May '17

07 May '17

So I've got 4 IDE HDDs, each with 3 RAID partitions on them, that were part of a RAID array in a now-very-dead NAS. Of course, I need to get data off them that wasn't backed up anywhere else. I've got a 4-port USB3 PCIe card, and 4 IDE/SATA USB adapters, and all the hardware seems to work. So far, so good. The problem is that the disks use the v0.90 metadata format, and they came from a big-endian system, not a little-endian system. MD superblocks *since* v0.90 are endian-agnostic, but back in v0.90, the superblock was byte-order specific. mdadm(8) on an Intel processor refuses to acknowledge the existence of the superblock. Testdisk detects it and correctly identifies it as a Big-endian v0.90 superblock. I'm reluctant to blindly do a forced --create on the four disks, because I'm not 100% certain of the RAID topology; there are at least two RAID devices, one of which was hidden from the user, so I have no a-priori knowledge of its RAID level or layout. The filesystems on the md(4) devices are, AFAIK, all XFS, and so should (hopefully) not have any endianness issues. I can't find any modern big-endian Linux systems... looks like all the ARM distros run in little-endian mode. Any suggestions on the best way to move forward? Thanks, -Adam

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