- Talk - lists.gtalug.org

of routers and access points
by David Mason 27 Apr '19

27 Apr '19

I had a setup where my modem was connected to my gateway Linux box which did routing, DHCP, DNS, etc. and was also connected to a switch which was connected to a WiFi router being used as an access point. This is too brittle for my tastes, as other members of my family can’t resolve problems with it. Something went wrong so I have temporarily reconfigured it so the WiFi router is connected directly to the modem, but this doesn’t let the WiFi clients connect to the Linux boxes or other hard-wired machines or let them connect to the internet. (I could connect the other devices to the router, but for WiFi propagation reasons, the WiFi router is far away from all the other devices, so this is not ideal.) So I was thinking of getting a https://www.canadacomputers.com/product_info.php?cPath=27_1046_363&item_id=… router and connecting to that the Linux box (which would still do DHCP (possibly) and DNS, the router configured back as an access point (or a POE access point such as https://www.canadacomputers.com/product_info.php?cPath=27_1056_356&item_id=…, as well as the other wired devices. Thoughts? Thanks. ../Dave

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[GTALUG-Announce] Round Table Q&A Session
by hi＠gtalug.org 23 Apr '19

23 Apr '19

<https://gtalug.org/meeting/2019-05/> # Round Table Q&A Session ==== A Round Table Q&A Session is where we take questions from the audience, and the audience discusses and attempts to answer those questions from their own knowledge. It's a great way to meet fellow members of our community and discover the skill sets we each bring to the table. There will be no video recording during the session. ==== ## Location George Vari Engineering and Computing Centre 245 Church Street, Room 203 Ryerson University <https://goo.gl/maps/16oJ2> <https://www.openstreetmap.org/way/23447525> ## Schedule * 6:00 pm - Please discuss on the general mailing list (i.e. <talk(a)gtalug.org>) where you want to go for dinner. * 7:30 pm - Meeting and presentation. * 9:00 pm - After each meeting, a group of GTALUGers move to The Imperial Pub (54 Dundas St East) for refreshments and more socialising. # Code of Conduct We want a productive happy community that can welcome new ideas, improve every process every year, and foster collaboration between individuals with differing needs, interests and skills. We gain strength from diversity, and actively seek participation from those who enhance it. This code of conduct exists to ensure that diverse groups collaborate to mutual advantage and enjoyment. We will challenge prejudice that could jeopardise the participation of any person in the community. The Code of Conduct governs how we behave in public or in private whenever the Linux community will be judged by our actions. We expect it to be honoured by everyone who represents the community officially or informally, claims affiliation or participates directly. It applies to activities online or offline. We invite anybody to participate. Our community is open. Please read more about the GTALUG Code of Conduct here: <https://gtalug.org/about/code-of-conduct/>. If you have any questions, comments, or concerns about the GTALUG Code of Conduct please contact the GTALUG Board @ <board(a)gtalug.org>. --- GTALUG Announce mailing list announce(a)gtalug.org https://gtalug.org/mailman/listinfo/announce

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Installing Anaconda with Python 3 on 32 bit linux (Ubuntu ver 16.04 )
by 90ur1 90ur1 20 Apr '19

20 Apr '19

I just downloaded and installed Ubuntu 16.04 on my IBM thinkpad edge . And then downloaded and tried to install Anaconda. The installer gave me an error that the binary is 64 bit while my computer is 32 bit. So I am trying a 32 bit linux package for Anaconda It is not listed on the downloads page. If you have used it , can you direct me to the link Thanks! Gouri

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April 2019 meeting video
by Alex Volkov 19 Apr '19

19 Apr '19

Hey Everyone, April 2019 meeting video -- Linux Unhatched Learning Circles at Toronto Public Library with Larysa Essex Is available here -- https://youtu.be/lvZ3gCzrXak Alex.

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Toronto BSP on Saturday, April 27
by Alex Volkov 18 Apr '19

18 Apr '19

Hello GTALUGers! Debian Bug Squashing party is happening in Toronto on Saturday, April 27 at 9am the Mozilla Toronto office. More details on this event are here -- https://wiki.debian.org/BSP/2019/04/ca/Toronto If you would like to participate please email me to (alex at flamy.ca) and I would add you to the list of participants. A Bug Squashing Party is a come-together of Debian Developers and Debian enthusiasts on a specified timeframe where these persons try to fix as many bugs as possible. I'm organizing this event with Sergio and Samuel and we've invited anarcat and invite him to come to Toronto and give his "Packaging 101" talk and has kindly 99%-accepted. Other than the presentation we're planning to introduce as many people as possible to software packaging in debian and squash as many bugs as we can. If Bug Squashing Party is something new, please read this beginners HOWTO -- https://wiki.debian.org/BSP/BeginnersHOWTO Alex.

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string representation is tricky
by D. Hugh Redelmeier 17 Apr '19

17 Apr '19

In some recent context, probably GTALUG-related, that UTF-16 is dumb. That it is the worst of two worlds: that not all characters could be represented as a single 16-bit value, that byte-order issues arise in byte streams of UTF-16, that UTF-16 is wasteful for representing ASCII. Java, Python before 3, Javascript, Microsoft's C and C++, the Jolliete filesystem, the NT File system, and many other things use UTF-8. Dumb. It represents a frozen mistake. Python 3, if I understand correctly, represents strings as arrays of UTF-32 characters. That too is dumb. It is wasteful. The driving justification is that it is thought that indexing an array of characters is an important and frequent operation and it should be O(1) in cost. An array of UTF-8 bytes can be indexed cheaply, but that does not get you to the n'th character. Indexing the character would cost O(n). But it turns out that indexing an array of characters is not a very useful operation. Iterating through the characters of a string is common, but that is a different thing and is cheap to do with UTF-8. I've just read an old blog post that is quite good at showing me even more odd things about UNICODE that I hadn't internalized. <https://manishearth.github.io/blog/2017/01/14/stop-ascribing-meaning-to-uni…> - UNICODE has code points, not characters. - "character" isn't a well defined concept. - a glyph might be made up of a sequence of codepoints combined. - a glyph might have several representations as a sequence of codepoints. - there may not be a canonical form for a glyph. - collating sequence is tough - fixed-width terminals cannot reasonably handle UNICODE - there is a well reasoned argument why indexing by codepoint is not important There's more. I recommend reading it and some of the things it references. Beware: I spent a lot of time following references to references. Example: => <https://eev.ee/blog/2015/09/12/dark-corners-of-unicode/> => <https://en.wikipedia.org/wiki/Ogham> => <https://en.wikipedia.org/wiki/Nimrod> => <https://en.wikipedia.org/wiki/Josephus> Luckilly, the code I write only has to understand ASCII. It has to be able to pass through other code points. UTF-8 is quite good for this.

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"93% of Paint Splatters are Valid Perl Programs"
by D. Hugh Redelmeier 15 Apr '19

15 Apr '19

I found this worth reading. <https://docs.google.com/document/d/1ZGGNMfmfpWB-DzWS3Jr-YLcRNRjhp3FKS6v0KEL…>

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Right to Repair Info Session Mon. Apr. 15
by Karen Lewellen 11 Apr '19

11 Apr '19

Hi folks, Sharing the below from an associate since the effort was discussed here. Karen ---------- Forwarded message ---------- Date: Thu, 11 Apr 2019 18:02:40 -0400 From: Dahne Jobson <jmgmediagroup(a)gmail.com> Subject: Right to Repair Info Session Mon. Apr. 15 [Rescheduled] Thank you for your support and I look forward to seeing you on Monday! *The Right to Repair Info Session is Back On!* Hello CSI Community! MPP Michael Coteau – Don Valley East, is tabling legislation to extend the Consumer Protection Act to include the *Right to Repair Electronics Bill* and will be at *CSI Annex MONDAY APRIL 15, 2:00 pm – 3:00 pm, Mtg Rm #1* to explain his Bill and wants your comments and feedback! ------------------------------ Mr. Coteau’s Right to Repair Bill aims to compel manufacturers to give consumers and repair shops what they need to repair their electronics themselves without voiding warranties, encouraging new product purchases or requiring the consumer exclusive use of the manufacturer’s repair services. Techniques employed by some manufacturers to extend the income cycle of “their” devices include, the gluing in of key components to prevent refurbishment and creating unique screws that require special tools that only the manufacturer has access to. (*Fun Fact: *Once you buy something, it’s *yours*!*)* The Right to Repair affects devices such as cell phones, computers, cars, farm machinery, and household items – washing machines and dishwashers. It also impacts small business, which are at risk of paying exorbitant fees to become registered resellers/technicians or going out of business entirely. The website, the Citizen Truth, features the article, ‘Is Apple Holding Their Consumers Hostage to Unfair Repair Prices? <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcitizentru…> *’, *that references a 2018 CBC undercover video, ‘Apple Store hidden camera footage exposes high cost for repairs’ <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.cbc.ca…>, exposing the extent of consumers’ vulnerability. An Apple customer seeking a remedy for their broken computer was quoted $1200 by the Apple Store rep, but had it repaired at an “unauthorized dealer” for between $75-$150 - the cost of the part, not the labour. *At an even greater cost to the consumer is the environmental impact of the rising amounts of electronic waste entering landfills.* A 2017 United Nations report, ‘Electronic waste poses ‘growing risk’ to environment, human <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fnews.un.or…> health’, warns that the growing volume of e-waste is an “urgent issue” in an increasing digital-dependent society. The EU and at least 18 U.S. states have adopted Right to Repair, and Mr. Coteau <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.cbc.ca…>‘s proposed Bill will put Canada on the right side of the debate and the planet. Join the discussion, and learn how you can show Queen’s Park your support when the Right to Repair comes up for debate in mid-April. Space is limited. Please RSVP at: tcmncommunitymediatv(a)gmail.com *CSI Annex MONDAY APRIL 15, 2:00 pm – 3:00 pm Mtg Rm #1* *Presented by: Dahne Jobson, The Toronto Community Media Network* *Copyright © 2019 THE TORONTO COMMUNITY MEDIA NETWORK. All rights reserved.* *Our Email address is:* TCMNCOMMUNITYMEDIATV(a)GMAIL.COM This email was sent to jmgmediagroup(a)gmail.com *why did I get this?* <https://facebook.us19.list-manage.com/about?u=9ecc278638672a4d8e7f58b96&id=…> unsubscribe from this list <https://facebook.us19.list-manage.com/unsubscribe?u=9ecc278638672a4d8e7f58b…> update subscription preferences <https://facebook.us19.list-manage.com/profile?u=9ecc278638672a4d8e7f58b96&i…> THE TORONTO COMMUNITY MEDIA NETWORK · 32 Oakdene Crescent · Toronto, ON M4J4H9 · Canada [image: Email Marketing Powered by Mailchimp] <http://www.mailchimp.com/monkey-rewards/?utm_source=freemium_newsletter&utm…>

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war story: fixing a doc bug can be hard
by D. Hugh Redelmeier 10 Apr '19

10 Apr '19

I'm reading dnf(8) on Fedora 29 and get irked by the layout of the options. --disableexcludes=[all|main|<repoid>], --disableexcludepkgs=[all|main|<repoid>] Here's what "man dnf" shows on a terminal that is 80 columns wide. Ugly. --disableexcludes=[all|main|<repoid>], --disableexcludep‐ kgs=[all|main|<repoid>] For those of you with MUAs that mangle this kind of stuff: the two options don't fit on one line so something broke the line in a terrible place and then filled the whitespace to justify the result. It would be a lot better to just break the line at the whitespace and to not justify the result. The "not justify" part should just fall out of there being no whitespace to stretch. In an attempt to fix this, I tried to figure out how this problem arose. Surely this would be easy -- I was a troff adept forty years ago. And surely troff couldn't have change much because (1) the orginal author, Joe Osssanna, died in 1977 (2) (I think) it is chained down by POSIX standard (3) the language rules made it hard to extend It turns out that the document representation and transformation isn't what I thought it was. It used to be that one wrote man pages in troff, using the "an" macros, optionally with tbl preprocessing for tables. The dnf documentation is in a Python representation called reStructured Text (.rst), not troff. The .rst gets formatted by a thing called sphinx, a complex Python system. Among other things, it produces a formatted manpage that gets shipped inside the dnf RPM. So that seems easy, if odd. But no. That formatting cannot take account of terminal width or characteristics. So the man command, when confronted with one of these files, process it in an intricate way, approximately: gunzip -c /usr/share/man/man8/dnf.8.gz | /usr/bin/preconv -e UTF-8 | /usr/bin/tbl | /usr/bin/nroff -mandoc -Tutf8 | /usr/bin/less -r The most peculiar part of that pipeline preconv. It converts the formatted document back into troff input! In the case of dnf(8), the resulting troff file has a few problems with the paragraph for these option but they don't explain this particular misformatting. The main problem seems to be in the "andoc" macros or in groff (the GNU implementation of *roff). And yes, groff has differences from the troff I knew 40 years ago. Getting this far in the problem has taken a few steps. - download the source for dnf and build the .rpm - attempt to figure out what builds what. The build log isn't as clear as I'd hope. I mistakenly thought it was rst2man but it is sphinx (they do share code). - air my issues on an appropriate mailing list. Contrary to the documentation, you actually have to join the list to post. So far this is the only traffic on the list this month. <https://sourceforge.net/p/docutils/mailman/docutils-users/?viewmonth=201904> Current state: - I think that some things are wrong with the resulting ephemeral nroff document but I don't know what's at fault and it isn't too important to me. I've reported it to the responsible authorities but I'm not sure that they accept that there are problems. - nroff -mandoc is doing something inappropriate with .TP macros but I don't know where the blame lies. It surely requires engaging with another community. I may run out of steam before getting farther.

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Two Things
by Howard Gibson 10 Apr '19

10 Apr '19

I promised to mention the Raspberry Pi Meetup. Power-over-Ethernet: One cable to rule them all, without catching fire! https://www.meetup.com/Raspberry-Pi/events/nwgbwqyzgbpb A second thing has come up that may interest somebody. The York Regional Science and Technology Fair is coming up this Saturday, and they are still looking for judges. From organizer Nathalie Rudner... Dear Howard, Our fair is days away and we are still a few judges short! We would appreciate it if you could please spread the word and/ or consider bringing a friend! A few more judges will help us ensure that every student is judged in a timely manner and that your schedule is not too busy! It also helps us cover for unexpected absences.If you know of someone who would be interested in helping us out, please share the folloing link with them so that they might register. https://secure.youthscience.ca/sfiab/yrstf. I greatly appreciate your help with this,Thank you!Nathalie RudnerYouth Science Canada Regional Coordinator - York Region -- Howard Gibson hgibson(a)eol.ca jhowardgibson(a)gmail.com http://home.eol.ca/~hgibson

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