- Roundtable - muug.ca

MUUG.ca mirrors down
by Trevor Cordes 04 Nov '17

04 Nov '17

FYI, MUUG.ca had a catastrophic disk failure that led to a pathological situation causing loss of the mirror array. The mirror data will likely be unavailable for a few days. The web site and mailing lists and other services should continue to function perfectly. We'll renotify here when the mirrors are back up. Thanks for your patience!

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Linux Help
by Mike Zettler 24 Oct '17

24 Oct '17

Hello MUUG! We are a small MSP in Winnipeg, we have a few customers with Linux servers and I don't have any Linux expertise on-staff. Would like to hire someone for a ½ day or so to check a few things on the servers, maybe re-configure. Can some contact me? Thank you! Mike Z. Mike Zettler Vice President of Operations| 365 Technologies Inc. 555 Plinguet Street, Winnipeg, MB R2J 0G2 O: 204.488.3655 Ext. 21|M: 204.803.7575 |E: MikeZ(a)365tech.ca<mailto:MikeZ@365tech.ca> Follow us on Twitter @365tech<http://twitter.com/365tech> [Description: Description: 365_WorryFreeIT] Our clients get results - read their stories here<http://www.365tech.ca/results.cfm> [Description: Description: MS Small Business Specialist-hi res] [http://www.oxford-knowledge.com/wp-content/uploads/2012/08/VMW_09Q4_LGO_PAR…] [http://dev.logikalteks.com/wp-content/uploads/2013/07/Dell_PreferredPartner…] Our Emails are intended to communicate, educate, and transfer information. Sometimes, these Emails qualify as Commercial Electronic Messages (CEM) under CASL. If you would prefer not to receive these Emails anymore, please click HERE<mailto:unsubscribe@365tech.ca?subject=Unsubscribe> or Email unsubscribe(a)365tech.ca<mailto:unsubscribe@365tech.ca> with the Subject 'Unsubscribe'.

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Small router box
by Kevin McGregor 20 Oct '17

20 Oct '17

Hey all, Maybe someone can remember the device I'm trying to recall. It's from a company that makes small devices which can run Linux and they come either as a bare board or in a small metal box with some number of ethernet ports. It's not ARM-based. I know that's vague, but surely some of you can come up with a list which will contain the one I'm trying to remember! Or something comparable, at least. Oh, and they used to advertise in Linux Journal. I'm not sure if they're still in business.

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Fwd: Re: [macports-mgr] Would like to add new mirror
by Adam Thompson 16 Oct '17

16 Oct '17

FYI: MUUG now provides a MacPorts mirror. As always, let us know if there's any distros or software you'd like us to mirror (that is at least tangentially UNIX-related, preferably). -Adam -------- Original Message -------- From: "Rainer Müller" <raimue(a)macports.org> Sent: October 15, 2017 1:02:53 PM CDT To: Adam Thompson <athompso(a)athompso.net> Cc: macports-mgr(a)lists.macports.org Subject: Re: [macports-mgr] Would like to add new mirror [...] I added the DNS entries and the mirrors to the wiki page: https://trac.macports.org/wiki/Mirrors?action=diff&version=95 The mirror URLs for distfiles and packages are now also live: https://github.com/macports/macports-ports/commit/e85e0350ed3ac015fd822ad29… Thank you for providing the mirror for MacPorts! Rainer -- Sent from my Android device with K-9 Mail. Please excuse my brevity.

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Unix command line challenge!
by Kevin McGregor 13 Oct '17

13 Oct '17

Given a gzipped cpio archive (12 GB!) with files in it like: wwdsvdccb101/root/data/ccb/ccbx/splapp/servers/myserver/tmp/.appmergegen_1347913274622/SPLWeb.ear/h7y1ba/data/xml/CILICEXP.xml wwdsvdccb101/root/data/ccb/ccbx/splapp/servers/myserver/tmp/.appmergegen_1347913274622/SPLWeb.ear/h7y1ba/data/xml/CILTSVTP.xml wwdsvdccb101/root/data/ccb/ccbx/splapp/servers/myserver/tmp/.appmergegen_1347913274622/SPLWeb.ear/h7y1ba/data/xml/C1LOOUPP.xml wwdsvdccb101/root/data/ccb/ccbx/splapp/servers/myserver/tmp/.appmergegen_1347913274622/SPLWeb.ear/h7y1ba/data/xml/CILTTRAL.xml wwdsvdccb101/root/data/ccb/ccbx/splapp/servers/myserver/tmp/.appmergegen_1347913274622/SPLWeb.ear/h7y1ba/data/xml/CILCSSPL.xml wwdsvdccb101/root/data/ccb/ccbx/splapp/servers/myserver/tmp/.appmergegen_1347913274622/SPLWeb.ear/h7y1ba/data/xml/CILTCLGP.xml How can I change the first component of the path to something else without unpacking the entire archive to disk first? Obviously I'll still have to un-gzip and de-cpio the whole 12GB while processing; I just don't want to put the whole thing on disk while I'm changing the path. Any ideas? Kevin

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MUUG Meeting, Oct. 10, 7:30pm -- Kid3, VLAN Theory and Implementation
by Gilbert E. Detillieux 10 Oct '17

10 Oct '17

*** Please note the updated meeting location below *** The Manitoba UNIX User Group (MUUG) will be holding its next monthly meeting on Tuesday, October 10. The meeting topic for this month is as follows: VLAN Theory and Implementation VLANs (Virtual Local Area Networks) allow you to partition a physical network at the data link layer, "creating the appearance and functionality of network traffic that is physically on a single network but acts as if it is split between separate networks." (Wikipedia) VLAN tagging (IEEE 802.1Q) allows traffic from multiple VLANs to travel between Ethernet switches over the same physical link. In this presentation, Gilbert Detillieux will introduce some of the basic concepts of VLAN setup, and show you how this can be implemented. Examples of implementation will be given using Cisco IOS commands and typical Linux network interface configuration. RTFM: Kid3 This month, Wyatt Zacharias will present and demonstrate Kid3, the KDE ID3 tag editor. 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 1C16A* Centennial 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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Looking for some AWK magic
by Wyatt Zacharias 24 Sep '17

24 Sep '17

So I've got a storage appliance that I'm trying to generate a growth chart on, but the output format of the statistics is not in a usable format. The output looks like this, with each day of the week in a column, and then 6 rows of data underneath, and then it repeats. -2- -3- -4- -5- -6- -7- -8- 5827.1 6865.6 3551.2 4649.5 4006.6 15803.5 10305.0 199.4 353.4 175.9 200.7 172.5 584.0 554.2 9.9x 4.4x 6.4x 5.9x 6.3x 5.6x 5.3x 3.0x 4.4x 3.2x 3.9x 3.7x 4.9x 3.5x 29.2x 19.4x 20.2x 23.2x 23.2x 27.1x 18.6x 96.6 94.9 95.0 95.7 95.7 96.3 94.6 -23- -24- -25- -26- -27- -28- -29- 2798.2 2235.3 2357.9 4701.3 9074.3 13796.5 11705.7 86.7 74.1 131.6 178.1 449.3 483.5 473.7 11.4x 12.0x 7.0x 8.1x 3.9x 6.3x 6.7x 2.8x 2.5x 2.6x 3.2x 5.2x 4.6x 3.7x 32.3x 30.2x 17.9x 26.4x 20.2x 28.5x 24.7x 96.9 96.7 94.4 96.2 95.0 96.5 96.0 -30- -31- -1- -2- -3- -4- -5- 2798.6 2274.5 2325.8 2472.1 2526.0 13955.3 11224.2 86.7 88.9 145.2 115.2 105.6 497.9 432.4 10.8x 10.1x 7.4x 8.1x 9.8x 6.2x 6.9x 3.0x 2.5x 2.2x 2.7x 2.4x 4.5x 3.8x 32.3x 25.6x 16.0x 21.5x 23.9x 28.0x 26.0x 96.9 96.1 93.8 95.3 95.8 96.4 96.1 Is there a way I can get awk to process 6 rows of each column at a time? -- Wyatt Zacharias

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Re: [RndTbl] Roundtable Digest, Vol 153, Issue 6
by Michael Doob 21 Sep '17

21 Sep '17

On the other hand awk has 1. a variable NR the contains the current line number 2. a % operator that can be used to compute modulo 7 3. a getline command that reads the next line of input That's all you need. Cheers, Michael ------------------------------------------------------------------ Michael Doob Telephone: (204) 474-9796 Department of Mathematics email: Michael.Doob(a)UManitoba.ca University of Manitoba Winnipeg, MB, Canada R3T 2N2 ------------------------------------------------------------------ ________________________________________ From: Roundtable <roundtable-bounces(a)muug.ca> on behalf of roundtable-request(a)muug.ca <roundtable-request(a)muug.ca> Sent: September 21, 2017 1:23:52 PM To: roundtable(a)muug.ca Subject: Roundtable Digest, Vol 153, Issue 6 Send Roundtable mailing list submissions to roundtable(a)muug.ca To subscribe or unsubscribe via the World Wide Web, visit https://muug.ca/mailman/listinfo/roundtable or, via email, send a message with subject or body 'help' to roundtable-request(a)muug.ca You can reach the person managing the list at roundtable-owner(a)muug.ca When replying, please edit your Subject line so it is more specific than "Re: Contents of Roundtable digest..." Today's Topics: 1. Looking for some AWK magic (Wyatt Zacharias) 2. Re: Looking for some AWK magic (Sean Cody) 3. Re: Looking for some AWK magic (John Lange) ---------------------------------------------------------------------- Message: 1 Date: Thu, 21 Sep 2017 12:01:33 -0500 From: Wyatt Zacharias <wyatt(a)magitech.ca> To: Continuation of Round Table discussion <roundtable(a)muug.ca> Subject: [RndTbl] Looking for some AWK magic Message-ID: <CANd2pR2wwERFj2R6_JswyzT91cpnq+RM7KhgC1goP6CEbbJoiQ(a)mail.gmail.com> Content-Type: text/plain; charset="utf-8" So I've got a storage appliance that I'm trying to generate a growth chart on, but the output format of the statistics is not in a usable format. The output looks like this, with each day of the week in a column, and then 6 rows of data underneath, and then it repeats. -2- -3- -4- -5- -6- -7- -8- 5827.1 6865.6 3551.2 4649.5 4006.6 15803.5 10305.0 199.4 353.4 175.9 200.7 172.5 584.0 554.2 9.9x 4.4x 6.4x 5.9x 6.3x 5.6x 5.3x 3.0x 4.4x 3.2x 3.9x 3.7x 4.9x 3.5x 29.2x 19.4x 20.2x 23.2x 23.2x 27.1x 18.6x 96.6 94.9 95.0 95.7 95.7 96.3 94.6 -23- -24- -25- -26- -27- -28- -29- 2798.2 2235.3 2357.9 4701.3 9074.3 13796.5 11705.7 86.7 74.1 131.6 178.1 449.3 483.5 473.7 11.4x 12.0x 7.0x 8.1x 3.9x 6.3x 6.7x 2.8x 2.5x 2.6x 3.2x 5.2x 4.6x 3.7x 32.3x 30.2x 17.9x 26.4x 20.2x 28.5x 24.7x 96.9 96.7 94.4 96.2 95.0 96.5 96.0 -30- -31- -1- -2- -3- -4- -5- 2798.6 2274.5 2325.8 2472.1 2526.0 13955.3 11224.2 86.7 88.9 145.2 115.2 105.6 497.9 432.4 10.8x 10.1x 7.4x 8.1x 9.8x 6.2x 6.9x 3.0x 2.5x 2.2x 2.7x 2.4x 4.5x 3.8x 32.3x 25.6x 16.0x 21.5x 23.9x 28.0x 26.0x 96.9 96.1 93.8 95.3 95.8 96.4 96.1 Is there a way I can get awk to process 6 rows of each column at a time? -- Wyatt Zacharias

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an MIT operating systems course on Github
by Grigory Shamov 14 Sep '17

14 Sep '17

Hi, It might be not that new, but just in case. In the Login magazine I won at last meeting¹s raffle there is an article about the subj. The course is opensourced. https://github.com/teachbsd/course Relies on a rather expensive book though, ³The Design and Implementation of the FreeBSD Operating System². -- Grigory Shamov WestGrid Site Lead / HPC Specialist University of Manitoba E2-588 EITC Building, (204) 474-9625

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More about network time...
by Gilbert E. Detillieux 13 Sep '17

13 Sep '17

Wyatt's presentation on NTPD last night prompted some discussion about other NTP implementations. (Chrony was mentioned in the presentation, and systemd-timesyncd was mentioned in discussion.) The latest Raspbian boot image for the Raspberry Pi (based on Debian stretch) no longer installs ntpd by default, but relies on systemd-timesyncd instead. (Presumably Debian stretch does something similar, though that may not be the case...) Of course, ntpd, chrony, and openntpd are all available as alternatives. The good news is that systemd-timesyncd seems to work for the very simple case of a client-only setup, where you just want to get the time reasonably close to some official time source (it only implements an NTP client, not a server), requires no special configuration, and seems to get out of the way if you install any of the more-capable NTP server packages. The bad news is that it doesn't do as good a job of keeping time in sync. It only contacts one of the available NTP servers, and sticks to that one until it's not reachable, in which case it tries the next available one, etc. It will use as time sources one of the available pool servers for the distribution, or (if provided) one of those indicated by the DHCP server. So, for the typical client, it may be fine. Also, it doesn't give you much by way of stats. You can use the "timedatectl" command, to find out if NTP synchronization is enabled or not, but that's about it. You can also use the "systemctl -l status systemd-tymesyncd" command, and look at the log entries showing which time server was used... Sep 09 07:02:29 raspberrypi systemd-timesyncd[215]: Synchronized to time server 206.108.0.134:123 (2.debian.pool.ntp.org) Sep 09 23:33:45 raspberrypi systemd-timesyncd[215]: Timed out waiting for reply from 206.108.0.134:123 (2.debian.pool.ntp.org) Sep 09 23:33:45 raspberrypi systemd-timesyncd[215]: Synchronized to time server 208.81.1.244:123 (2.debian.pool.ntp.org) Sep 10 00:43:48 raspberrypi systemd-timesyncd[215]: Timed out waiting for reply from 208.81.1.244:123 (2.debian.pool.ntp.org) Sep 10 00:43:48 raspberrypi systemd-timesyncd[215]: Synchronized to time server 174.94.155.224:123 (2.debian.pool.ntp.org) No way to check for offset and other such stats, though. (It may not even track that.) Chrony seems to be a quite capable replacement for NTPD, with a configuration file format that looks quite similar (at least for the basic config). There are a couple different commands to get stats... [root@host ~]# chronyc sources 210 Number of sources = 7 MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== ^* ntp1.mydomain.net 3 10 377 280 -274us[ -216us] +/- 71ms ^+ ntp2.mydomain.net 3 10 377 585 -348us[ -290us] +/- 66ms ^+ ntp3.mydomain.net 3 10 377 510 -696us[ -638us] +/- 68ms ^+ james.kirk.hungrycats.org 2 10 377 229 -3138us[-3138us] +/- 69ms ^+ ns541050.ip-144-217-252.n 3 9 377 390 -2763us[-2705us] +/- 102ms ^+ sanction.treborlogic.com 2 10 377 983 +573us[ +630us] +/- 75ms ^+ 209.115.181.107 3 10 377 455 +13ms[ +13ms] +/- 108ms [root@host ~]# chronyc sourcestats 210 Number of sources = 7 Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev ============================================================================== ntp1.mydomain.net 39 19 273m -0.000 0.007 -814us 65us ntp2.mydomain.net 16 9 90m -0.002 0.066 -619us 68us ntp3.mydomain.net 27 17 226m -0.010 0.013 -784us 52us james.kirk.hungrycats.org 6 4 86m +0.160 1.290 -3291us 739us ns541050.ip-144-217-252.n 8 6 60m -0.143 0.280 -3050us 162us sanction.treborlogic.com 6 3 86m +0.287 0.623 +614us 302us 209.115.181.107 12 9 189m +0.129 0.121 +13ms 262us [root@hedge ~]# The default config is set up to query servers in the pool for the distro (rhel in the above example, with the last 4 servers shown), but will also include any NTP servers indicated by DHCP (the first 3 servers shown, with bogus host names in this example). I haven't tried OpenNTPD (The OpenBSD NTP daemon), so I don't know how that one looks compared to the classic NTPD. Gilbert -- 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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