May 2021 - WLUG - wlug.mailman3.com

Re: Fedora 34 updates

by joshua.gage.stone＠gmail.com

Hey Ron, Under normal circumstances, `dnf upgrade` will decide to automatically update its metadata depending on the age of the cache: $ dnf repolist --verbose | grep --extended-regexp '^Repo-(id|expire)' Last metadata expiration check: 0:03:23 ago on Fri 21 May 2021 10:18:52 AM EDT. Repo-id : fedora Repo-expire : 604,800 second(s) (last: Sat 15 May 2021 12:40:46 AM EDT) Repo-id : fedora-cisco-openh264 Repo-expire : 1,209,600 second(s) (last: Fri 21 May 2021 10:18:40 AM EDT) Repo-id : google-chrome Repo-expire : 172,800 second(s) (last: Fri 21 May 2021 10:18:50 AM EDT) Repo-id : rpmfusion-free Repo-expire : 1,209,600 second(s) (last: Fri 21 May 2021 10:18:50 AM EDT) Repo-id : rpmfusion-free-updates Repo-expire : 172,800 second(s) (last: Fri 21 May 2021 10:18:51 AM EDT) Repo-id : rpmfusion-nonfree Repo-expire : 1,209,600 second(s) (last: Fri 21 May 2021 10:18:51 AM EDT) Repo-id : rpmfusion-nonfree-updates Repo-expire : 172,800 second(s) (last: Fri 21 May 2021 10:18:52 AM EDT) Repo-id : updates Repo-expire : 21,600 second(s) (last: Fri 21 May 2021 10:18:43 AM EDT) This has the benefit of keeping package metadata up to date so installing outdated packages doesn't happen often. Running `dnf upgrade --refresh` will have a similar effect to `apt update && apt full-upgrade`, where you'd be forcing a metadata cache update with every upgrade. You can also force dnf to stick to just the local cache and skip metadata updates with `dnf upgrade --cacheonly`. You can learn more about different supported options by running `dnf upgrade --help`. - Josh On Fri, 2021-05-21 at 14:08 +0000, THE HAMMER via WLUG wrote: > I just installed Fedora 34 on a "junk laptop" to play along with. > Looked on line and wound up with a couple different answers, and so > perhaps they are all correct. My question is when I want to update > all the packages in the lap top what is the correct/best command? > > Also what is the difference between > > dnf upgrade > > and > > dnf upgrade --refresh > > Thanks > > Ron > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: > https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: > https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/X4PAR…

May 21, 2021

Re: [EXT] Fedora 34 updates

by Krichevsky, Nicholas J.

Unlike something like apt, dnf periodically refreshes its caches (I don't know what the condition is off the top of my head). Using just dnf upgrade will either 1) use the current local version of the caches, if it still considers them valid or 2) perform a refresh. Once that happens, it will calculate the upgrade. Adding --refresh forces #2. I usually opt for --refresh just to make sure I have the latest packages. ________________________________ From: THE HAMMER via WLUG <wlug(a)lists.wlug.org> Sent: Friday, May 21, 2021 10:08:57 AM To: WLUG LIST <wlug(a)lists.wlug.org> Cc: THE HAMMER <hammerron(a)hotmail.com> Subject: [EXT] [WLUG] Fedora 34 updates I just installed Fedora 34 on a "junk laptop" to play along with. Looked on line and wound up with a couple different answers, and so perhaps they are all correct. My question is when I want to update all the packages in the lap top what is the correct/best command? Also what is the difference between dnf upgrade and dnf upgrade --refresh Thanks Ron

May 21, 2021

Fedora 34 updates

by THE HAMMER

I just installed Fedora 34 on a "junk laptop" to play along with. Looked on line and wound up with a couple different answers, and so perhaps they are all correct. My question is when I want to update all the packages in the lap top what is the correct/best command? Also what is the difference between dnf upgrade and dnf upgrade --refresh Thanks Ron

May 21, 2021

Re: Carbon-neutral living

by Chris Thompson

Great start, thanks Joshua! Definitely agree that moving heat is one of the better items to be considering. There are a good few options for the ground-based systems depending on space available and funds. You hit on some YT channels that I typically look at on renewable/green info. One that I'd add to that pile is "Just Have a Think": https://www.youtube.com/channel/UCRBwLPbXGsI2cJe9W1zfSjQ There's also a couple Tesla fan-boys @ "Now You Know". They do a good job covering some interesting renewable tech outside of Tesla as well, including other new (generally electric) transportation options and more: https://www.youtube.com/channel/UCMFmrcGuFNu_59L0pHcR0OA As an aside, Battery Hookup is great for sourcing used low-cycle count batteries that are ideal for things like DIY power-walls for home solar, if you really want to geek out on storage. They've also got a few (small-scale - i.e. camping-size) solar items still available from the Renogy liquidation sale that started a few days ago: https://batteryhookup.com/ (use a code on checkout - BATTERY or DIY normally work for at least 5%) Regards, Chris On 5/14/21 1:45 PM, joshua.gage.stone--- via WLUG wrote: > Hey everyone! > > Thanks for another night full of discussion covering many interesting > topics! > > I'm interested to learn more about everyone's longterm plans for > carbon-neutral/carbon-negative living! My wife and I have been > researching on this topic for some time as we believe there are > numerous benefits in reducing energy requirements, and we hope that > when it comes time to become home owners we'll be able to start from > the ground up with this type of living ingrained in our household! > > It turns out that there's a *lot* of room for improvement in energy > efficiency, and by extension, carbon reduction. While I think > transition to green energy is immensely important as a longterm plan, I > also think it's important for us to evaluate ways to reduce our carbon > footprint as individuals > > Examples include: > > - Switching to induction stoves which are more efficient and safer than > traditional electric stoves > > https://www.youtube.com/watch?v=pftcQ6NGPfc > > - Switching to heat pump dryers for reducing energy usage with the > added bonus of eliminating the need for vents > > https://www.energystar.gov/products/heat_pump_dryer > https://www.youtube.com/watch?v=Nh-j0sWBEJA > > - Switching to heat pump water heaters > > https://www.energy.gov/energysaver/heat-pump-water-heaters > https://www.youtube.com/watch?v=omivdhxdGv0 > > - Switching to air-source/ground-source heat pumps to replacing > gas/oil/electric heating for hot water and heating > > https://www.energystar.gov/products/heating_cooling/heat_pumps_geothermal > https://www.energystar.gov/products/heating_cooling/heat_pumps_air_source > https://www.youtube.com/watch?v=7zrx-b2sLUs > > I think heat pump technology could be very promising for a wide number > of applications, as it turns out that the most efficient way to work > with heat is to simply *move* it around, rather than generate more heat > through gas, oil, etc. With climate change and global warming being an > existential threat, the last thing we want to do is add more heat to > the problem! > > > A more ambitious longterm goal my wife and I have is that we would like > to someday have a house built to Passive House standards, which is said > to reduce home heating requirements by up to 90%: > > https://www.youtube.com/watch?v=secB3R0sIYU > https://phmass.org/ > https://www.buildwithrise.com/stories/texas-passive-house-weathered-the-202… > https://zeroenergy.com/portfolio/all-projects > https://zeroenergyproject.org/wp-content/uploads/2018/07/RPA_Scranton_Passi… > https://www.phius.org/home-page > > Something I find especially interesting about Passive Houses is that > they're often able to achieve net positive energy production and EV > charging with even a modust solar panel installation. This means they > can give back to the power grid with fewer panels compared to other > houses built to code, reducing the total environmental impact from > solar panel manufacturing. > > Of course, there's a high upfront monetary cost to transitioning to > eco-friendly living, but at least there are programs in place to help: > > https://www.masssave.com/ > https://multifamily.fanniemae.com/financing-options/specialty-financing/gre… > > > Hope to hear everyone's thoughts! > > > - Josh > > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/ZD5QG…

May 14, 2021

Carbon-neutral living

by joshua.gage.stone＠gmail.com

Hey everyone! Thanks for another night full of discussion covering many interesting topics! I'm interested to learn more about everyone's longterm plans for carbon-neutral/carbon-negative living! My wife and I have been researching on this topic for some time as we believe there are numerous benefits in reducing energy requirements, and we hope that when it comes time to become home owners we'll be able to start from the ground up with this type of living ingrained in our household! It turns out that there's a *lot* of room for improvement in energy efficiency, and by extension, carbon reduction. While I think transition to green energy is immensely important as a longterm plan, I also think it's important for us to evaluate ways to reduce our carbon footprint as individuals Examples include: - Switching to induction stoves which are more efficient and safer than traditional electric stoves https://www.youtube.com/watch?v=pftcQ6NGPfc - Switching to heat pump dryers for reducing energy usage with the added bonus of eliminating the need for vents https://www.energystar.gov/products/heat_pump_dryer https://www.youtube.com/watch?v=Nh-j0sWBEJA - Switching to heat pump water heaters https://www.energy.gov/energysaver/heat-pump-water-heaters https://www.youtube.com/watch?v=omivdhxdGv0 - Switching to air-source/ground-source heat pumps to replacing gas/oil/electric heating for hot water and heating https://www.energystar.gov/products/heating_cooling/heat_pumps_geothermal https://www.energystar.gov/products/heating_cooling/heat_pumps_air_source https://www.youtube.com/watch?v=7zrx-b2sLUs I think heat pump technology could be very promising for a wide number of applications, as it turns out that the most efficient way to work with heat is to simply *move* it around, rather than generate more heat through gas, oil, etc. With climate change and global warming being an existential threat, the last thing we want to do is add more heat to the problem! A more ambitious longterm goal my wife and I have is that we would like to someday have a house built to Passive House standards, which is said to reduce home heating requirements by up to 90%: https://www.youtube.com/watch?v=secB3R0sIYU https://phmass.org/ https://www.buildwithrise.com/stories/texas-passive-house-weathered-the-202… https://zeroenergy.com/portfolio/all-projects https://zeroenergyproject.org/wp-content/uploads/2018/07/RPA_Scranton_Passi… https://www.phius.org/home-page Something I find especially interesting about Passive Houses is that they're often able to achieve net positive energy production and EV charging with even a modust solar panel installation. This means they can give back to the power grid with fewer panels compared to other houses built to code, reducing the total environmental impact from solar panel manufacturing. Of course, there's a high upfront monetary cost to transitioning to eco-friendly living, but at least there are programs in place to help: https://www.masssave.com/ https://multifamily.fanniemae.com/financing-options/specialty-financing/gre… Hope to hear everyone's thoughts! - Josh

May 14, 2021

Re: Reminder: WLUG Meeting tonight! May 13th 2021 at 7pm!

by Keith Wright

Tim Keller via WLUG <wlug(a)lists.wlug.org> writes: > This is a reminder that we've got a meeting today at 7pm! I expect to be there (here). > Topics tonight will likely include the UMN debacle, I'm from Minnesota, so to me UMN means University of MN, what does that have to do with Linux? It must be some variant of Universal Markup. So I did what we do, ask google. UMN is University of MN; try again. "UMN Debacle" is some drug test done at UMN that went bad, needs someone to blame. Eventually I find that UMN also got some bad code into the Linux update stream and had their write permissions revoked. I had heard on the radio that something like that had happened, but didn't remeber where it came from, and the radio news readers/reporters clearly didn't know what they were talking about anyway. Next! > the encoder/decoder vulnerability stuff, No time to look that up. I'll have to fake it. > probably some other Linux related stuff! Oh good. We are finally going to have a discussion of use of Scheme macros based on linear logic to produce provably correct concurrent programs. I am getting ready by re-reading the proof of the Myhill-Shepherdson theorem. > I'd also like to talk about meeting in person. Why would I do that? There are some people I am eager to meet in person, because I want to feel them up. None of those people are WLUG members (sorry if that hurts your feelings, but it's best to be honest). I am vaccinated, but I am also on immuno-supressor drugs, haven't driven for 15 years, and haven't been in the same room as some of those people alluded to above for 15 months. It's too soon for me. Go ahead and meet downtown if you wish; I doubt I will be there for a while. I hope the video-chat meetings go on for a while concurrently (with a provably correct procedure, of course!). -- Keith

May 13, 2021

Reminder: WLUG Meeting tonight! May 13th 2021 at 7pm!

by Tim Keller

This is a reminder that we've got a meeting today at 7pm! In the usual location: https://meet.jit.si/WlugMA Topics tonight will likely include the UMN debacle, the encoder/decoder vulnerability stuff, probably some other Linux related stuff! I'd also like to talk about meeting in person. If it's something that people are down for (I know Maddog is!) I'll reach out to Technopia and see what their rules are. Thanks, Tim. -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

May 13, 2021

Re: Reminder! Meeting Next Week on May 13th 2021!

by Joel

Hi All, I also get my second shot Tuesday. Go team Phyz! I can do remote meeting this week. Can do either Jitsi or in person in June and beyond. Joel On May 7, 2021 10:36:10 AM John Stoffel via WLUG <wlug(a)lists.wlug.org> wrote: > Tim> We've got a meeting on May 13th! > > Dang, won't make it because I'm travelling for work. Half vaccinated > too. I get the second after I get back, yay! > > Tim> For topics, there's a whole lot to talk about! Obviously the UMN > Tim> stuff, as well as the x86 decoder fun. > > And I wish I had more to talk about zeek too. It was interesting > getting it installed, but I recently rebuilt that box to run the > TP-Link Omada software on a dedicated box. I'm annoyed that they're > Java web app is so damn far behind in terms of OS support. > > But having a tool to summarize zeek stuff better would be nice. The > daily report was interesting, but not really what I wanted, but I'm > not sure what I want. Something simple and ASCII, but focused. Lots > to talk about there, but maybe leave that to another meeting. > > > Tim> I think it's worth revisiting having in person meetings.. At some > Tim> point here in the near future a majority of us are going to be > Tim> vaccinated. I'll reach out to Kevin (if he's not already reading > Tim> this!) and see what Technopia's policies are going to > Tim> be. Whatever we do, I think we've all agreed it makes sense to > Tim> keep the virtual component going as well. To that point, I'll be > Tim> getting my second shot on Tuesday so I might be not feeling > Tim> great, we'll see. > > I've been meaning/wanting to visit Technopia and to even join so as to > have a place to go where I can be around other motivated people and > work on my Phd (Projects Half Done) stuff. Plus there's good places > around there for food afterwards. > > Heck, in another year or so it might be fun to do a wlug woo-sox game > meeting. > > > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/3OFZM…

May 7, 2021

Re: Reminder! Meeting Next Week on May 13th 2021!

by John Stoffel

Tim> We've got a meeting on May 13th! Dang, won't make it because I'm travelling for work. Half vaccinated too. I get the second after I get back, yay! Tim> For topics, there's a whole lot to talk about! Obviously the UMN Tim> stuff, as well as the x86 decoder fun. And I wish I had more to talk about zeek too. It was interesting getting it installed, but I recently rebuilt that box to run the TP-Link Omada software on a dedicated box. I'm annoyed that they're Java web app is so damn far behind in terms of OS support. But having a tool to summarize zeek stuff better would be nice. The daily report was interesting, but not really what I wanted, but I'm not sure what I want. Something simple and ASCII, but focused. Lots to talk about there, but maybe leave that to another meeting. Tim> I think it's worth revisiting having in person meetings.. At some Tim> point here in the near future a majority of us are going to be Tim> vaccinated. I'll reach out to Kevin (if he's not already reading Tim> this!) and see what Technopia's policies are going to Tim> be. Whatever we do, I think we've all agreed it makes sense to Tim> keep the virtual component going as well. To that point, I'll be Tim> getting my second shot on Tuesday so I might be not feeling Tim> great, we'll see. I've been meaning/wanting to visit Technopia and to even join so as to have a place to go where I can be around other motivated people and work on my Phd (Projects Half Done) stuff. Plus there's good places around there for food afterwards. Heck, in another year or so it might be fun to do a wlug woo-sox game meeting.

May 7, 2021

Re: Reminder! Meeting Next Week on May 13th 2021!

by Jon "maddog" Hall

Tim, For what it is worth I got my second Pfizer shot February 27th. On March 11th I flew to Miami, Florida for an IPO of Digital Ocean (a friend of mine is a founder), directly into the middle of maskless College idiots doing spring break (I wore a mask and practiced social distancing as well as getting my first two tests for COVID). Two weeks later I flew to Rio de Janeiro for a month (business meetings and to see my husband for the first time in a year). I feel safe in going to indoor restaurants (I still wear my mask when not actively eating and drinking. I trust in medicine, science and statistics, and I feel like Superman. So I would support in-person meetings for vaccinated people, particularly if masks are used. md On Thu, May 6, 2021 at 10:04 AM Tim Keller via WLUG <wlug(a)lists.wlug.org> wrote: > Hey Gang! > > We've got a meeting on May 13th! > > For topics, there's a whole lot to talk about! Obviously the UMN stuff, as > well as the x86 decoder fun. > > I think it's worth revisiting having in person meetings.. At some point > here in the near future a majority of us are going to be vaccinated. I'll > reach out to Kevin (if he's not already reading this!) and see what > Technopia's policies are going to be. Whatever we do, I think we've all > agreed it makes sense to keep the virtual component going as well. To that > point, I'll be getting my second shot on Tuesday so I might be not feeling > great, we'll see. > > What do people think? > > Later, > Tim. > > -- > I am leery of the allegiances of any politician who refers to their > constituents as "consumers". > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: > https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: > https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/DWVD6… >

May 6, 2021