- Roundtable - muug.ca

Reminder: MUUG Online Meeting, Tonight, June 9, 7:30pm -- Net-SNMP Setup
by Gilbert E. Detillieux 09 Jun '20

09 Jun '20

A reminder that the online MUUG meeting is happening this evening... -------------------------------------------------------------------- The Manitoba UNIX User Group (MUUG) will be holding its next monthly meeting online, on Tuesday, June 9th, at 7:30pm: Daemon Dash: Net-SNMP Setup Simple Network Management Protocol (SNMP) is a widely used protocol for monitoring the health and welfare of network equipment (e.g. routers), computer equipment and even devices like UPS's. Net-SNMP is a suite of applications used to implement SNMP v1, SNMP v2c and SNMP v3 using both IPv4 and IPv6. Adam Thompson will demonstrate how to quickly set up the Net-SNMP daemon using the built-in configuration tools. We will also attempt to do an online "door prize" draw this month! Join the meeting: https://jitsi.merlin.mb.ca/muug.2020.06 The group 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. 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, or linking to it on social media: 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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Fix resolv.conf on WSL instantiation...
by Sean Cody 03 Jun '20

03 Jun '20

I must be having a rough week or just getting older but I can’t seem to come up with an elegant solution to this problem… Ok… I have WSL on my workstation, when I establish VPN to $work, WSL buggers resolv.conf. From: nameserver <mine> search <$homedomain> To: nameserver <mine> nameserver <$work1> nameserver <$work2> search <$workdomain> I have to manually take line 1 and move it to line 3 for internal resolution to work… EVERY DAMNED TIME WSL instantiates (while VPN is established). This is because $workdomain is blackholed publicly. My first thought was a stupid ed script to move line 1 to 3… that didn’t work so well (my ed skills are apparently lacking). Ideally the solution would note if there 3 or more nameserver lines, move the lines before ‘nameserver <$work1>’ to one line before the last file. I’d pop that into my .bashrc/.profile or similar. I couldn’t find how WSL manipulates the file itself otherwise I would have tried to change it… Anyone have any ideas there? -- Sean

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MUUG Online Meeting, Tuesday, June 9, 7:30pm -- Net-SNMP Setup
by Gilbert E. Detillieux 02 Jun '20

02 Jun '20

The Manitoba UNIX User Group (MUUG) will be holding its next monthly meeting online, on Tuesday, June 9th, at 7:30pm: Daemon Dash: Net-SNMP Setup Simple Network Management Protocol (SNMP) is a widely used protocol for monitoring the health and welfare of network equipment (e.g. routers), computer equipment and even devices like UPS's. Net-SNMP is a suite of applications used to implement SNMP v1, SNMP v2c and SNMP v3 using both IPv4 and IPv6. Adam Thompson will demonstrate how to quickly set up the Net-SNMP daemon using the built-in configuration tools. We will also attempt to do an online "door prize" draw this month! Join the meeting: https://jitsi.merlin.mb.ca/muug.2020.06 The group 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. 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, or linking to it on social media: 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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Apache comments
by Gilbert E. Detillieux 02 Jun '20

02 Jun '20

After using Apache httpd for over 20 years, I just discovered today, by accident, that comments are not allowed on the same line as directives in the configuration files... https://stackoverflow.com/questions/50084211/how-to-add-comment-in-apache-h… https://httpd.apache.org/docs/2.4/configuring.html#syntax Not sure how I've managed to edit those config files all these years without coming across this before! Gilbert -- Gilbert E. Detillieux E-mail: <gedetil(a)cs.umanitoba.ca> Dept. of Computer Science Web: http://www.cs.umanitoba.ca/~gedetil/ University of Manitoba Phone: (204)474-8161 Winnipeg MB CANADA R3T 2N2 Fax: (204)474-7609

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interesting unix pipe problem (stop whole pipe chain on first match)
by Trevor Cordes 31 May '20

31 May '20

For the punters out there... think you can find a better (shorter command line? no signals?) way to solve this interesting problem? I want to run an nmap on a network range, but have it quit (with output) the instant it finds the first "up" host. Nmap doesn't seem to have any way to achieve this. So I thought why not use unix pipes to do this? Oh ya, let's throw on a maximum run time too. So the goal is to run as quickly as we can to find one host on the network (the normal case), with the total time capped at something lower than nmap seems to want to take. And I need a way to still tell if the whole enchilada found something or not, and I want to wait for that result to come in. I need to take different action on whether we found a host or not. Note, nmap timeout and rtt options seem to apply per-host so even with sane-ish numbers, nmap will still often take 40-60s to run this command. Here's what I've come up with (view in monospace): echo 192.168.101 | \ timeout 30 bash -c \ " \ sint=\$(cat); \ (nmap -ddd -vvv --send-ip \ --host-timeout 5s --max-rtt-timeout 1s --initial-rtt-timeout 500ms \ --max-retries 1 -S \$sint.1 -sn -PE \$sint.2 \$sint.254-254 2>&1 & \ echo \$! >&3) \ 3>pidnmap \ | grep --line-buffered -P 'RCVD.{0,30}?ICMP.{0,60}?Echo reply' \ | (head -1 && kill \$(<pidnmap) 2>&1) \ " \ |grep RCVD || echo "no hosts found" I initially thought head would sigpipe the nmap once it got it's one line... and maybe it is, but nmap doesn't quit. So I have to explicitly kill the nmap later to make sure it truly dies rather than continue its 60s run. Hence the convoluted pid/kill stuff. I tried pkill -g0 at first, but it ate all the output and made it impossible to tell if we got output or not. And using return values (ideal) seems completely hopeless as soon as signals are involved. And no, setting /bin/timeout to the very minimum time I'm willing to tolerate (say 10s?) is not a good solution either, as I really want this command to return in the < 100ms it takes in the normal case. So, other than hacking nmap to immediately respond to sigpipe or adding a "quit after finding X up hosts" option, does anyone see a better UNIXy way to do this? The general problem isn't nmap specific... it's really a problem of shortcircuiting out of any long-running program when we see a certain line of its output. Heck, maybe there's already a coreutil or moreutil that does this generally somehow, but I couldn't find it faster than I could write the above! My gut says it's just got to be easier than this!! I couldn't believe how convoluted the solution quickly became.

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Further to Remote Desktop Access during this COVID-19 time
by Bradford C. Vokey 27 May '20

27 May '20

Hello fellow MUUGers. At the last MUUG round table, I mentioned I use a paid remote desktop service called "Splashtop" to access my office computers from home. They have a very reasonable commercial rate of only $99 per year for access for up to 10 computers. Well today, they just announced a major upgrade to their streaming for no additional charge and I just had to highly recommend them if you are looking for professional remote desktop solutions during this work from home time. They have awesome multi-monitor, and iphone/android support, which is the major reason why I use them over open source solutions. That and the fact that I've never had any issues using their software over the last 12 months. Their software just works. YMMV. -- Bradford C. Vokey Treasurer Manitoba Unix User Group -------- Forwarded Message -------- Subject: New Splashtop Performance Features, Single Sign-On Integration and More! Date: Wed, 27 May 2020 09:28:53 -0700 (PDT) From: The Splashtop Team <email(a)splashtop.com> Reply-To: The Splashtop Team <email(a)splashtop.com> To: Brad splashtop <splashtop(a)fsi.ca> Splashtop introduces high resolution streaming, single sign-on integration, and more new features. <https://marketing.splashtop.com/acton/ct/3744/s-06d1-2005/Bct/q-0ced/l-sf-l…> Hi Brad, Thank you for being a Splashtop customer! We value your business and want to make sure you are aware of our most recent enhancements that will elevate your remote access experience. *High resolution streaming at low latency* Splashtop has added new performance features that support multi-monitor 4K-quality streaming at more than 40 frames per second, at low latency. What that means is if you are a video editor, game developer, CAD/CAM user, or need to perform processing-intensive activities, you can now be better equipped to work from home without requiring physical access to your high-end workstations. Read what professionals in the media and entertainment industry <https://marketing.splashtop.com/acton/ct/3744/s-06d1-2005/Bct/q-0ced/l-sf-l…> and architects <https://marketing.splashtop.com/acton/ct/3744/s-06d1-2005/Bct/q-0ced/l-sf-l…>have to say about their experience working from home with Splashtop. See these tips to enable hardware acceleration in the Splashtop Streamer <https://marketing.splashtop.com/acton/ct/3744/s-06d1-2005/Bct/q-0ced/l-sf-l…> and enable hardware acceleration in the Splashtop Business App <https://marketing.splashtop.com/acton/ct/3744/s-06d1-2005/Bct/q-0ced/l-sf-l…>. *Single Sign-On (SSO) **i**ntegration add-on* To improve our users’ security and enable easy, centralized authentication Splashtop has integrated with major identity providers like ADFS, Azure AD, Okta, OneLogin, and JumpCloud. You can now use your centralized SSO User ID and password to authenticate your Splashtop account. Contact us if you are interested to add on SSO to your subscription <https://marketing.splashtop.com/acton/ct/3744/s-06d1-2005/Bct/q-0ced/l-sf-l…>. Learn more about the new Splashtop and JumpCloud SSO integration at a Splashtop and JumpCloud live Q&A on May 29^th at 11:30 am ET <https://marketing.splashtop.com/acton/ct/3744/s-06d1-2005/Bct/q-0ced/l-sf-l…>. Be sure to select the May 29th date when registering. Regards, The Splashtop Team customer-success(a)splashtop.com <mailto:customer-success@splashtop.com> (408) 758-5899 1054 S. De Anza Blvd. #200, San Jose, CA 95129 1054 S De Anza Blvd, Suite 200, San Jose, CA 95129, USA

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MUUG Online Meeting, Tonight, May 12, 7:30pm -- Setting up a Jitsi Server
by Gilbert E. Detillieux 12 May '20

12 May '20

A reminder that the MUUG meeting will take place online tonight... The Manitoba UNIX User Group (MUUG) will be holding its next monthly meeting on Tuesday, May 12th, at 7:30pm: Setting up a Jitsi Server In light of the current concerns over COVID-19 and the risk of infection, and current directives from the University of Winnipeg, the MUUG board has decided to try our first online meeting at 7:30pm! Troy Denton will demonstrate how you can build and deploy Jitsi, a secure video conferencing solution. An added twist -- this exhibition potentially may be hosted on Jitsi... to demonstrate Jitsi! Stay tuned to the muug.ca home page for the official URL, which will be made available a few minutes before the meeting starts. (Reload the page if you don't see the link, or if there are issues with connecting.) The group 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. 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, or linking to it on social media: 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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New Xeon NUC released
by Adam Thompson 06 May '20

06 May '20

If you don't have much room but still want to run a moderately beefy VM server with internal NVMe storage... Bit expensive, but could be worth it for some scenarios. https://www.theregister.co.uk/2020/05/06/nuc9vxqnx_pro_review/

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MUUG Online Meeting, May 12, 7:30pm -- Setting up a Jitsi Server
by Gilbert E. Detillieux 05 May '20

05 May '20

The Manitoba UNIX User Group (MUUG) will be holding its next monthly meeting on Tuesday, May 12th, at 7:30pm: Setting up a Jitsi Server In light of the current concerns over COVID-19 and the risk of infection, and current directives from the University of Winnipeg, the MUUG board has decided to try our first online meeting at 7:30pm! Troy Denton will demonstrate how you can build and deploy Jitsi, a secure video conferencing solution. An added twist -- this exhibition potentially may be hosted on Jitsi... to demonstrate Jitsi! Stay tuned to muug.ca for the official URL, or watch for an e-mail update, if you're on our mailing list. The group 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. 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, or linking to it on social media: 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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Square payment system
by Hartmut W Sager 02 May '20

02 May '20

As many of you know, MUUG uses the Square Technologies credit card and debit card payment processing system. I have now been using that system as well for a few months (I signed up through the MUUG referral link), and I want to hereby give *my resounding endorsement of this system*. It even works properly with the Canadian banks' Visa Debit and MasterCard Debit cards, in both Visa/MasterCard credit card mode and Interac debit card mode (Moneris, co-owned by RBC and BMO, never accepted those cards in credit card mode, and thus never accepted them in Internet or phone transactions). Also, the collected payments at Square Technologies are deposited into your bank account in 1-2 days. That's fast for a credit card processor! And their Web interface is exceptionally well-featured, giving you extensive control in managing your customers, while also allowing simple one-off payments. Their hardware also gives excellent choices, especially for integrating with your mobile phone. Use the following referral link for MUUG to receive the referral credit: https://squareup.com/i/MANITOBAU1 Hartmut W Sager - Tel +1-204-339-8331

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