Introduction to eBPF
https://oswalt.dev/2021/01/introduction-to-ebpf/

https://redd.it/l0s4pl
@r_linux

Container networking is simple
https://iximiuz.com/en/posts/container-networking-is-simple/

https://redd.it/l0qz6y
@r_linux

OpenWrt 19.07.6 - Service Release
https://openwrt.org/releases/19.07/notes-19.07.6

https://redd.it/l1757x
@r_linux

Cache Poisoning and Remote Code Execution in Popular DNS Forwarder dnsmasq
https://www.jsof-tech.com/wp-content/uploads/2021/01/DNSpooq_Technical-Whitepaper.pdf

https://redd.it/l174ie
@r_linux

User power, not power users: htop and its design philosophy
https://hisham.hm/2020/12/18/user-power-not-power-users-htop-and-its-design-philosophy/

https://redd.it/l17fqa
@r_linux

New Year, new Red Hat Enterprise Linux programs: Easier ways to access RHEL
https://www.redhat.com/en/blog/new-year-new-red-hat-enterprise-linux-programs-easier-ways-access-rhel

https://redd.it/l19kx0
@r_linux

Ubuntu boot on Apple M1 Macs achieved; port to be released later today
https://twitter.com/cmwdotme/status/1351838924621099008?s=21

https://redd.it/l1a4dr
@r_linux

Anthony from Linus Tech Tips (not that Linus) has an unboxing and first impressions of the Librem 5 from Purism
https://www.youtube.com/watch?v=BH8DRyKUZDg?

https://redd.it/l1amd0
@r_linux

Linux Terminal Chess With Source
https://iibbrr.itch.io/linux-windows-terminal-chess-with-source

https://redd.it/l19oo4
@r_linux

RHEL is now Free* for up to 16 production servers
https://arstechnica.com/gadgets/2021/01/centos-is-gone-but-rhel-is-now-free-for-up-to-16-production-servers/

https://redd.it/l1cak6
@r_linux

Rocky Linux: January 2021 Community Update
https://forums.rockylinux.org/t/community-update-january-2021

https://redd.it/l1b29t
@r_linux

Issues with language localization with Linux UPDATE

A few days ago, I posted a rant about how difficult it is for non-Latin Language users to use Linux based operating systems.

In that post, I declared Ubuntu for having the best out of the box experience with Asian input thanks to Gnome's well-integrated IME support.

Well, today I am happy to say that the Linux Mint Cinnamon edition has the easiest to use Asian input method to date.

​

https://preview.redd.it/ogceagv29ic61.png?width=1920&format=png&auto=webp&s=873efc6f563f64a4dff3c0ffccf1a1ce088755fd

As you can see from the screen shot above, not only does Asian input work right after a reboot, the language settings page contains easy to follow step by step instructions on how to enable the majority of languages direction from the GUI.

I'm glad taht The Mint team has created an easy to use GUI for localization and this further cements Linux Mint as a truly beginner friendly distro.

https://redd.it/l1bb2j
@r_linux

Package managers all the way down [LWN.net]
https://lwn.net/Articles/712318/

https://redd.it/l1828u
@r_linux

unbound-adblock: The Ultimate DNS firewall
https://geoghegan.ca/unbound-adblock.html

https://redd.it/l1jdqf
@r_linux

Is it worth switching to M1 Mac as a Linux User

As Linux user, I would love to hear the opinion of my fellow linux users how they feel about the M1 Mac and is it worth making the switch to apple m1 macbook, if not then what are some powerful alternatives that we could use that would be as powerful as m1 macbook and run linux

https://redd.it/l1l8kh
@r_linux

Have linux watch windows folders

I have a setup in my home with a ubuntu pc that acts as a server, and my work/gaming pc which runs windows.
The server is for data storage and I'd like to somehow monitor certain folders with linux so that when a new object is added/created in said folders, it first activates a task in windows, in the folder (a powershell noscript to be precise) and after a set amount of time, it should import the created file to the ubuntu server. The ubuntu server can access the folders on windows via smb, windows hovever can't access and modify the Ubuntu files (samba doesn't work for some reason, permissions etc are set correctly)

Is something like that even possible? I'm relatively new to Linux so I don't know if something like this could be done.
Any ideas and suggestions are welcome

https://redd.it/l1k933
@r_linux

BTRFS, defragmentation and compression: unclear/divergent informations.

So, I recently installed my OS with BTRFS and I've trying to learn better about it. But I just found conflicting information about compression and defragmentation.

https://docs.oracle.com/cd/E37670\_01/E37355/html/ol\_use\_case1\_btrfs.html

This Oracle page says that "LZO offers a better compression ratio, while zlib offers faster compression".


https://btrfs.wiki.kernel.org/index.php/Compression

While, the wiki says that

"ZLIB -- slower, higher compression ratio (uses zlib level 3 setting, you can see the zlib level difference between 1 and 6 in zlib sources).

LZO -- faster compression and decompression than zlib, worse compression ratio, designed to be fast
ZSTD -- (since v4.14) compression comparable to zlib with higher compression/decompression speeds and different ratio levels"

Some of them should be wrong OR it's something about the level option for ZLIB. Maybe when it's a low level of compression it's faster and when it's a higher level of compression it has a better compression rate. Anyway, does anyone have a clarification about that?

​

Also, about defragmentation: the wiki says "Currently (v4.14), it's not possible to select "no compression", using the defrag command. This may change in the future." while the Oracle page instructs to use the "-c" option to compress while defragmenting. Is the wiki out of date or something?

https://redd.it/l1ihla
@r_linux

How would I monitor my GPU usage like in windows task manager?

I can't seem to find any apps that display my GPU usage which is very important because I'm planning on gaming on this machine and I'd like to see how well my GPU is performing. Right now I'm using a crappy placeholder GPU until I can find a good one. Any help would be much appreciated thx :)

https://redd.it/l1or1r
@r_linux

Kids find a security flaw in Linux Mint by mashing keys
https://github.com/linuxmint/cinnamon-screensaver/issues/354

https://redd.it/l1nfwg
@r_linux

Raid 1 SSD+HDD

I know, stupid question, but I'ma post it anyways: Can I set up a fast SSD and a reliable HDD in RAID 1, so that it is not slowed down IN READING (!) by the HDD? The use cases I'm thinking of are:
1. Network storage where upload speed is negligible, while download speed is crucial.
(Usually uploading is a task whose completion does not need to be awaited for you to start doing the next thing, while downloading usually happens when the file is crucial for the continuation of your work, leaving you in a busy-idle state. Ofc this is not always the case, but in my experience a general tendency.)
2. Fast booting times of an SSD in combination with the reliability of an HDD.... Yeah ok scrap that one for linux. But if anyone wants to still play advocatus asini, one could argue that the user who wants that has the stupidity of not being able to mount the HDD at the right place, combined with the craziness of making such a sophisticated setup.

Would you suggest such a setup for the first scenario?

https://redd.it/l1pqg6
@r_linux

PSA: By default, Firefox on Linux doesn't match with your monitor's native/current refresh rate if you're using a high refresh rate monitor. Here's how I fixed it.

Just discovered this today while trying to fix Firefox's mouse scrolling as I can feel it's quite janky compared to when using Chrome/Chromium (still on Linux) or when I'm on Windows (dual boot) on any browser.

It felt like I was running 30 \~ 60 FPS at the minimum so I can definitely feel the difference since the rest of the system runs at 144hz (i.e, dragging windows around, mouse pointer, games, etc.).

My current setup: F33, Gnome wayland, 2k 144hz monitor.

\---

To correct this. First, make sure that you're running the supported refresh rate of your monitor (I already did so this wasn't my problem). But on Gnome, it's just in the Settings > Displays > Refresh Rate. I think you need xrandr for other WM though.

Next, open Firefox's about:config and set this key (default = -1):

layout.framerate 144

That's it! Restart Firefox and scroll through any webpage in your monitor's native speed!

\---

**Bonus:** Here's the mouse scrolling tweaks that I used to match with my preference (first problem as mentioned). YMMV so feel free to tweak this in case you prefer a different feel.

general.smoothScroll.msdPhysics.enabled true
mousewheel.minlinescrollamount 30

There are other related settings that you could tweak like:

general.smoothScroll.currentVelocityWeighting
general.smoothScroll.mouseWheel.durationMaxMS
general.smoothScroll.mouseWheel.durationMinMS
general.smoothScroll.stopDecelerationWeighting

The first two was sufficient enough for me so I left the other settings as is.

Edit:

So I tried to replicate the same issue on Xorg as a guy below said nothing changed from his side, I found that this seems to be more about the display servers or compositors (Wayland, Xorg) than Firefox all alone.

I tried logging in through an Xorg session and set the layout.frame_rate back to -1 and there I had no issues with scrolling not running on the right frame rate, it was all good, tested after a few restarts and it was running correctly. I then got back to wayland and it was all the same issue again, set back to the frame_rate to 144 and it was all good.

I'm not familiar yet with how display servers or compositors work under the hood so I'll let someone else chime in on this if this was actually the culprit here.

https://redd.it/l1re17
@r_linux