The Linux Questions Thread: a bunch of pitfalls, but technically it's possible

The Something Awful Forums > Discussion > Serious Hardware/Software Crap > The Linux Questions Thread: a bunch of pitfalls, but technically it's possible

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post hole digger: Mar 21, 2011

anthonypants posted:

CentOS (and Fedora) are kind of upstream of RHEL, so I'm gonna say almost exactly as long as RHEL

I'm pretty sure that's not the case, there have been a bunch of projects designed to provide security errata for centos.

https://petersouter.xyz/the-story-of-errata-for-centos/

# ? Oct 24, 2018 06:01

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# ? Apr 29, 2024 04:44

nem: Jan 4, 2003; panel.dev
apnscp: cPanel evolved

Quite tight knit. Opened a bug report for a systemd incongruity and got sent straight to Redhat by the CentOS maintainers.

evol, work your magic. I need the e directive in tmpfiles to work per spec. :downsgun:

Major releases lag a month or less. Updates within the branch are 72 hours at most. I�ll look further tomorrow and maybe evol or someone on the inside is better positioned to answer that. AFAIK Redhat/CentOS is much more intertwined such that CentOS/EPEL backfeeds to RHEL releases for experimental releases. I recall coming across a presentation that suggests the relationship as so. Fedora is bleeding edge, RHEL your crotchety grandmother, and CentOS a compromise.

Edit: no dice on said presentation

nem fucked around with this message at 17:32 on Oct 24, 2018

# ? Oct 24, 2018 09:21

kujeger: Feb 19, 2004; OH YES HA HA

CentOS is basically RHEL with branding removed. It's affiliated with Red Hat the company since some years ago.

Fedora is where the new stuff happens, and it eventually trickles down to RHEL/CentOS, usually for major releases.

# ? Oct 24, 2018 09:51

apropos man: Sep 5, 2016; You get a hundred and forty one thousand years and you're out in eight!

When Fedora 29 comes out in a few days you'll no longer be able to use yum on the command line, as it won't link to DNF any longer.

I wonder when DNF will replace yum in RHEL/CentOS? Version 8? I imagine they'd keep the yum/dnf linking for a good while in the parent distro's, though. It could cause havoc with ancient scripts on production machines.

# ? Oct 24, 2018 11:11

Vulture Culture: Jul 14, 2003; I was never enjoying it. I only eat it for the nutrients.

kujeger posted:

CentOS is basically RHEL with branding removed. It's affiliated with Red Hat the company since some years ago.

Fedora is where the new stuff happens, and it eventually trickles down to RHEL/CentOS, usually for major releases.

They basically stopped giving a poo poo about CentOS giving their stuff back to the community once Oracle started siphoning their work up en masse and actually selling it at Oracle prices

# ? Oct 25, 2018 03:52

jaegerx: Sep 10, 2012; Maybe this post will get me on your ignore list!

Vulture Culture posted:

They basically stopped giving a poo poo about CentOS giving their stuff back to the community once Oracle started siphoning their work up en masse and actually selling it at Oracle prices

Huh? I get oracle Linux sucks but redhat actually supports centos now. I think they bought them.

# ? Oct 25, 2018 04:05

Vulture Culture: Jul 14, 2003; I was never enjoying it. I only eat it for the nutrients.

jaegerx posted:

Huh? I get oracle Linux sucks but redhat actually supports centos now. I think they bought them.

The relationship between Red Hat and CentOS used to be somewhat strained in the RHEL5 days�RHEL maintainers often didn't take bug reports from people unless they could be reproduced on actual RHEL, for example. Things improved right around the time that Red Hat stopped supplying individual kernel patches in their kernel SRPMs because of Oracle Linux. It wasn't coincidence.

# ? Oct 25, 2018 04:32

kujeger: Feb 19, 2004; OH YES HA HA

Oracle Enterprise Linux "support" also is/was basically Oracle searching for the answers on red hat's subscriber-only areas.

Oracle has always been and always will be a horrible, awful company and you should never give them money.

# ? Oct 25, 2018 08:57

LochNessMonster: Feb 3, 2005; I need about three fitty

ToxicFrog posted:

Also, that will poo poo the bed if any of those folders have unusual names. And since you have -maxdepth without -mindepth it'll find /some/nfs/folder itself too, not just its subdirectories.

Use find -0/xargs -0, or, better, find -exec, and add -mindepth:
code:
find /some/nfs/folder -mindepth 1 -maxdepth 1 -type d -name "*$1" -exec mv -t "$RM_DIR" '{}' '+'

Bit late but this worked, thanks for that. The mindepth solved the issue. I tried -exec but didn�t get that working before but it did now!

# ? Oct 25, 2018 11:58

jaegerx: Sep 10, 2012; Maybe this post will get me on your ignore list!

sounds like oracle. awful company.

# ? Oct 26, 2018 05:39

G-Prime: Apr 30, 2003; Baby, when it's love,
if it's not rough it isn't fun.

Related, Oracle now charges per-core licensing for Java 11 in production unless you use OpenJDK. Had to have an argument over that at work yesterday, because somebody wanted to put the Oracle JDK into a base Docker image that gets used pretty extensively on a Kubernetes cluster that's currently running roughly 25 16-core nodes and autoscales. So assuming best case scenario and we literally never scale up, that's $2M in licensing a year. Could we just not? Could Oracle maybe just... stop?

# ? Oct 26, 2018 11:47

Mr Shiny Pants: Nov 12, 2012

Do I need to change the hosts file when my machine has a static IP?

Some .Net libraries return 127.0.1.1 when asking for the IPAddress of the machine. Debian/Ubuntu seems to fill this.

Ha, you can't seem to post the full path to the hosts file it seems, Cloud Flare throws a fit.

# ? Oct 26, 2018 13:15

RFC2324: Jun 7, 2012; http 418

Mr Shiny Pants posted:

Do I need to change the hosts file when my machine has a static IP?

Some .Net libraries return 127.0.1.1 when asking for the IPAddress of the machine. Debian/Ubuntu seems to fill this.

Ha, you can't seem to post the full path to the hosts file it seems, Cloud Flare throws a fit.

127.0.0.0 is localhost. anything going to one of those addresses will come back to the machine itself.

127.0.1.1 is odd, but I've seen it before.

# ? Oct 26, 2018 13:46

Vulture Culture: Jul 14, 2003; I was never enjoying it. I only eat it for the nutrients.

RFC2324 posted:

127.0.0.0 is localhost. anything going to one of those addresses will come back to the machine itself.

127.0.1.1 is odd, but I've seen it before.

Debian and derivatives use 127.0.1.1 all the time because of this bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=316099

# ? Oct 26, 2018 14:38

Mr Shiny Pants: Nov 12, 2012

RFC2324 posted:

127.0.0.0 is localhost. anything going to one of those addresses will come back to the machine itself.

127.0.1.1 is odd, but I've seen it before.

Yes, but do I need to change it? And will it break other stuff? Or should it already have been changed to my actual IP seeing that the machine has a static one.

# ? Oct 26, 2018 16:43

anthonypants: May 6, 2007; by Nyc_Tattoo; Dinosaur Gum

Mr Shiny Pants posted:

Yes, but do I need to change it? And will it break other stuff? Or should it already have been changed to my actual IP seeing that the machine has a static one.

You don't need to change it and it's been there for over a decade, so whether it'll break stuff or not is up to whoever's been writing programs for Debian and Debian derivatives since 2005.

# ? Oct 26, 2018 17:03

Mr Shiny Pants: Nov 12, 2012

anthonypants posted:

You don't need to change it and it's been there for over a decade, so whether it'll break stuff or not is up to whoever's been writing programs for Debian and Debian derivatives since 2005.

It seems that .Net core uses a system call to get the machine's IPAdress by querying the hostname and it returns 127.0.1.1.... Making my server not take any connections.

# ? Oct 26, 2018 17:52

anthonypants: May 6, 2007; by Nyc_Tattoo; Dinosaur Gum

Mr Shiny Pants posted:

t seems that .Net core uses a system call to get the machine's IPAdress by querying the hostname and it returns 127.0.1.1.... Making my server not take any connections.

You have your server listening on a hostname?

# ? Oct 26, 2018 18:10

Mr Shiny Pants: Nov 12, 2012

anthonypants posted:

You have your server listening on a hostname?

No I get the hostname and then get the IPAddress which belongs to it, on Mono it returns the one external IPAddress which I hoped to get. On .Net Core it returns the 127.0.1.1 because the hostname seems to be mapped to this address.

I can do it another way, but this would make sense for this particular application.

code:

> Dns.GetHostAddresses(Dns.GetHostName());;
val it : IPAddress [] = [|192.168.1.5 {Address = 83994816L;
                                       AddressFamily = InterNetwork;
                                       IsIPv4MappedToIPv6 = false;
                                       IsIPv6LinkLocal = false;
                                       IsIPv6Multicast = false;
                                       IsIPv6SiteLocal = false;
                                       IsIPv6Teredo = false;
                                       ScopeId = ?;}|]

Mr Shiny Pants fucked around with this message at 20:23 on Oct 26, 2018

# ? Oct 26, 2018 20:18

other people: Jun 27, 2004; Associate Christ

Vulture Culture posted:

Debian and derivatives use 127.0.1.1 all the time because of this bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=316099

what the gently caress debian

# ? Oct 26, 2018 21:24

anthonypants: May 6, 2007; by Nyc_Tattoo; Dinosaur Gum

Mr Shiny Pants posted:

No I get the hostname and then get the IPAddress which belongs to it, on Mono it returns the one external IPAddress which I hoped to get. On .Net Core it returns the 127.0.1.1 because the hostname seems to be mapped to this address.

I can do it another way, but this would make sense for this particular application.
code:
> Dns.GetHostAddresses(Dns.GetHostName());;
val it : IPAddress [] = [|192.168.1.5 {Address = 83994816L;
                                       AddressFamily = InterNetwork;
                                       IsIPv4MappedToIPv6 = false;
                                       IsIPv6LinkLocal = false;
                                       IsIPv6Multicast = false;
                                       IsIPv6SiteLocal = false;
                                       IsIPv6Teredo = false;
                                       ScopeId = ?;}|]

Is it really standard practice in .NET to use a DNS resolver to get a local IP address? :psyduck:

# ? Oct 26, 2018 22:02

Mr Shiny Pants: Nov 12, 2012

anthonypants posted:

Is it really standard practice in .NET to use a DNS resolver to get a local IP address?

It is just the namespace, they could have called it System.Networking or whatever but they didn't. But that is besides the point even if it was.

# ? Oct 26, 2018 23:48

Volguus: Mar 3, 2009

For any server application, when you're looking to open a listening socket, you should allow the user to specify the IPs that socket should listen on via either program argument or config file. If they want 0.0.0.0 or 127.0.0.1 should not be an issue. Come with a sensible default for the application (can be just localhost) and leave it at that.

# ? Oct 27, 2018 00:28

Mr Shiny Pants: Nov 12, 2012

Volguus posted:

For any server application, when you're looking to open a listening socket, you should allow the user to specify the IPs that socket should listen on via either program argument or config file. If they want 0.0.0.0 or 127.0.0.1 should not be an issue. Come with a sensible default for the application (can be just localhost) and leave it at that.

Yes, valid points, but I wanted this to be automatic and ran across this.

# ? Oct 27, 2018 00:55

Volguus: Mar 3, 2009

Mr Shiny Pants posted:

Yes, valid points, but I wanted this to be automatic and ran across this.

You never want this to be automatic. The user should and has to decide what IPs the servers are listening on. Automatic should only be 127.0.0.1, if even that.

# ? Oct 27, 2018 01:00

IAmKale: Jun 7, 2007; やらないか; Fun Shoe

Can I roll anything like iMessage between Android and Linux for taking phone calls and SMS through my computer?

I switched two years ago from Linux to macOS for web dev work. macOS stuck because, compared to Ubuntu/Mint/etc..., it felt like a way more polished �Linux desktop� experience. I was spoiled by Google Fi�s VOIP capabilities via Hangouts for a few years, but when I switched to an iPhone X a year later for unrelated reasons, iMessage�s more reliable phone calling and SMS support sealed the deal.

Soon I�m going to have to give up my work-provided MBP, and so now I�m considering getting a MacBook Pro and sticking with iOS or, say, a Lenovo ThinkPad X1 Carbon, throwing Pop!_OS on it, and going back to Android (which I think I still prefer). The Linux option offers a degree of upgradeability and dock support for two monitors and a nice keyboard and mouse that seems like would be a major pain in the rear end sticking with Apple and their propensity for dongles.

What I haven�t been able to find, or devise on my own, is any way to handle phone calls and texting through my computer if I were to go the Linux route. Is iMessage really the only player in this particular game?

# ? Oct 27, 2018 06:24

anthonypants: May 6, 2007; by Nyc_Tattoo; Dinosaur Gum

IAmKale posted:

Can I roll anything like iMessage between Android and Linux for taking phone calls and SMS through my computer?

I switched two years ago from Linux to macOS for web dev work. macOS stuck because, compared to Ubuntu/Mint/etc..., it felt like a way more polished �Linux desktop� experience. I was spoiled by Google Fi�s VOIP capabilities via Hangouts for a few years, but when I switched to an iPhone X a year later for unrelated reasons, iMessage�s more reliable phone calling and SMS support sealed the deal.

Soon I�m going to have to give up my work-provided MBP, and so now I�m considering getting a MacBook Pro and sticking with iOS or, say, a Lenovo ThinkPad X1 Carbon, throwing Pop!_OS on it, and going back to Android (which I think I still prefer). The Linux option offers a degree of upgradeability and dock support for two monitors and a nice keyboard and mouse that seems like would be a major pain in the rear end sticking with Apple and their propensity for dongles.

What I haven�t been able to find, or devise on my own, is any way to handle phone calls and texting through my computer if I were to go the Linux route. Is iMessage really the only player in this particular game?

You can do iMessage from macOS or iOS only, and Hangouts on the desktop is going to be tied to Chrome.

# ? Oct 27, 2018 06:45

G-Prime: Apr 30, 2003; Baby, when it's love,
if it's not rough it isn't fun.

IAmKale posted:

Can I roll anything like iMessage between Android and Linux for taking phone calls and SMS through my computer?

I switched two years ago from Linux to macOS for web dev work. macOS stuck because, compared to Ubuntu/Mint/etc..., it felt like a way more polished �Linux desktop� experience. I was spoiled by Google Fi�s VOIP capabilities via Hangouts for a few years, but when I switched to an iPhone X a year later for unrelated reasons, iMessage�s more reliable phone calling and SMS support sealed the deal.

Soon I�m going to have to give up my work-provided MBP, and so now I�m considering getting a MacBook Pro and sticking with iOS or, say, a Lenovo ThinkPad X1 Carbon, throwing Pop!_OS on it, and going back to Android (which I think I still prefer). The Linux option offers a degree of upgradeability and dock support for two monitors and a nice keyboard and mouse that seems like would be a major pain in the rear end sticking with Apple and their propensity for dongles.

What I haven�t been able to find, or devise on my own, is any way to handle phone calls and texting through my computer if I were to go the Linux route. Is iMessage really the only player in this particular game?

You can't do calls with it, but KDE Connect (which works on other desktop environments, to be clear) works great for notification forwarding to a computer, and being able to respond to texts. I haven't found a way to initiate texts from it yet, and it only works if your devices are on the same network, no bluetooth support yet. So, it's far from perfect, but it's usable.

# ? Oct 27, 2018 19:48

ToxicFrog: Apr 26, 2008

IAmKale posted:

What I haven�t been able to find, or devise on my own, is any way to handle phone calls and texting through my computer if I were to go the Linux route. Is iMessage really the only player in this particular game?

For texting specifically, use messages.android.com. You'll need to feed the QR code to your phone to activate it, since it works by sending the message to your phone over the internet and then via SMS from there.

For phone calls...Google Voice, maybe? I've never used it but I understand it can intercall with the normal phone network.

# ? Oct 27, 2018 20:11

SoftNum: Mar 31, 2011

ToxicFrog posted:

For phone calls...Google Voice, maybe? I've never used it but I understand it can intercall with the normal phone network.

I've used google voice through hangouts on android, linux and windows and my wife uses it on her iPhone and iPad. It's a great option and works roughly as well as any other VOIP option. (that is it's fine if you have the network for it)

# ? Oct 27, 2018 20:20

apropos man: Sep 5, 2016; You get a hundred and forty one thousand years and you're out in eight!

G-Prime posted:

You can't do calls with it, but KDE Connect (which works on other desktop environments, to be clear) works great for notification forwarding to a computer, and being able to respond to texts. I haven't found a way to initiate texts from it yet, and it only works if your devices are on the same network, no bluetooth support yet. So, it's far from perfect, but it's usable.

KDE Connect also lets you reply to WhatsApp messages too. So if you're me lazy and your phone's on charge in another room you don't have to get up.

I'm not sure how much it breaks the encryption in WhatsApp, but I imagine that the only weak-spot is on your local LAN, whilst KDE Connect is doing API calls to the phone, so as long as you trust your local LAN you should be good to go.

I haven't a clue about iOS/iMessage though.

apropos man fucked around with this message at 21:14 on Oct 27, 2018

# ? Oct 27, 2018 21:07

apropos man: Sep 5, 2016; You get a hundred and forty one thousand years and you're out in eight!

Is there anything inherently wrong with running two nmb services on one LAN?

I used to have two running: one on my KVM host which has a samba share running, and another instance on a KVM guest which also has a samba share running.

Host and guest are both on the same subnet (192.168.1.0/24) so I turned the guest one off.

Now my share connects instantaneously on my laptop over autofs but if I try and browse the same share on my android phone it takes about 5 to 10 seconds to connect to samba.

# ? Oct 27, 2018 22:30

anthonypants: May 6, 2007; by Nyc_Tattoo; Dinosaur Gum

https://twitter.com/whitequark/status/1056465205218209792

and, before you ask,
https://twitter.com/whitequark/status/1056468558992105472

# ? Oct 28, 2018 19:24

Bob Morales: Aug 18, 2006; ~~Just wear the fucking mask, Bob~~

I don't care how many people I probably infected with COVID-19 while refusing to wear a mask, my comfort is far more important than the health and safety of everyone around me!

https://twitter.com/RedHat/status/1056621364088586241

# ? Oct 28, 2018 20:33

some kinda jackal: Feb 25, 2003; �
�

Emoji in dmesg. Truly Linux is now a competitive desktop operating system.

# ? Oct 28, 2018 20:34

mystes: May 31, 2006

Martytoof posted:

Emoji in dmesg. Truly Linux is now a competitive desktop operating system.

Is this like the systemd version of "avocado toast"?

# ? Oct 28, 2018 20:37

Methanar: Sep 26, 2013; by the sex ghost

Bob Morales posted:

https://twitter.com/RedHat/status/1056621364088586241

How does IBM feel about open source these days?

# ? Oct 28, 2018 20:38

some kinda jackal: Feb 25, 2003; �
�

Bob Morales posted:

https://twitter.com/RedHat/status/1056621364088586241

https://www.youtube.com/watch?v=umDr0mPuyQc

oh for gently caress's sake.

# ? Oct 28, 2018 20:38

waffle iron: Jan 16, 2004

Bob Morales posted:

https://twitter.com/RedHat/status/1056621364088586241

Lord in heaven.

Edit: At least it's not Oracle?

waffle iron fucked around with this message at 20:44 on Oct 28, 2018

# ? Oct 28, 2018 20:42

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# ? Apr 29, 2024 04:44

minato: Jun 7, 2004; cutty cain't hang, say 7-up.; Taco Defender

Bob Morales posted:

https://twitter.com/RedHat/status/1056621364088586241

This is gonna be interesting. Apparently a bunch of Red Hat devs came from IBM because IBM wasn't a great place to work...

waffle iron posted:

Edit: At least it's not Oracle?

# ? Oct 28, 2018 20:52

The Something Awful Forums > Discussion > Serious Hardware/Software Crap > The Linux Questions Thread: a bunch of pitfalls, but technically it's possible

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