Kubuntu Forums - General

awk/sed/whatever bash question

oshunluvr — Tue, 06 Oct 2026 19:51:09 GMT

I wrote and maintain a set of Dolphin Service Menus to allow some btrfs functionality to be accessible from Dolphin.

I am adding the ability to determine if a "btrfs send|btrfs receive" operation was successful. The success or failure is is indicated by two items retrievable from "btrfs su show". They are "Received UUID:" followed by a UUID and "FLAGS:" followed by "readonly". Both entries are only set if the send|receive operation completes successfully.

One uses the "btrfs su show" action to see the full list of subvolume information, which looks like this:

Code:

sudo btrfs su show @KDEneon_backup
Name:                   @KDEneon_backup
UUID:                   00983575-f97d-d942-9537-f4c8c29bc77a
Parent UUID:            0bef4f24-2620-7443-84d2-43c82a79e690
Received UUID:          16716210-06d4-ea42-9048-7449068cb643
Creation time:          2026-10-06 05:39:35 -0400
Subvolume ID:           2246
Generation:             14825
Gen at creation:        14820
Parent ID:              5
Top level ID:           5
Flags:                  readonly
Send transid:           2145521
Send time:              2026-10-06 05:39:35 -0400
Receive transid:        14821
Receive time:           2026-10-06 05:39:36 -0400
Snapshot(s):
Quota group:            n/a

If the send|receive operation fails, the fields after "Received UUID" and "Flags:" have a dash in them instead of the above.

The question: Is there a preferred or "better" way to extract this information from the above output?

Currently, I'm using:

Code:

RECEIVED_UUID=`sudo -S btrfs su sh $SOURCE | awk 'NR >4 && NR<=5 {print $3}'`
READONLY_FLAG=`sudo -S btrfs su sh $SOURCE | awk 'NR >11 && NR<=12 {print $2}'`

$SOURCE is the full path and filename of the selected subvolume. The above awk statements retrieve the Received UUID and "readonly" from Flags, and it works.

I then use a conditional "if - or" to check for the dash instead of anything else:

Code:

if [[ $RECEIVED_UUID == '-' || $READONLY_FLAG == '-' ]]; then

so if either entry is not set, the script reports that it failed or wasn't a "sent" snapshot.

I feel like there must be a handful of other ways to scrape the info. Mostly, I'm just curious, but having "solid" code is always a good idea.

Thoughts?

A late Monday afternoon

die.boer — Mon, 05 Oct 2026 16:18:44 GMT

Me fixing to braai a bit
https://youtube.com/shorts/z68Hv7cfT...F_HHHnMVYcrai2

Random screen flashes under CPU load on a AMD Renoir iGPU after 7.0.0-34 → 7.0.0-38 upgrade

mheaton58 — Mon, 05 Oct 2026 13:10:58 GMT

Bluetooth speaker connects, but no audio after upgrade to kubuntu 26.04

rcdawson — Fri, 02 Oct 2026 20:14:29 GMT

the speaker appears to connect, and it shows up as connected,in the audio control app. Sound is audible on the laptop's speakers. Any suggestions for troubleshooting?

My country

die.boer — Sat, 26 Sep 2026 16:40:44 GMT

Some things I stumbled upon ,half of it I didn't even know ,and been living here 55yrs 😬

Oh ,and Ubuntu is in there as well 😁

https://youtu.be/xIkmkD22930?si=aVWdPBeFLMK20PaA

Paid Subscription Statistics

Snowhog — Sat, 26 Sep 2026 00:41:26 GMT

The funds raised via our Paid Subscriptions goes entirely to maintaining KFN online. There are no salaries, not even for our Host and Owner of KFN, Open Source. He, along with the other Administrators, do what we do without compensation.

ASUS Googlebook

Qqmike — Thu, 24 Sep 2026 17:59:51 GMT

Sure looks interesting:

ASUS - Googlebook 14" 3K OLED Touchscreen Laptop w/ Gemini Intelligence - Intel Core Ultra 5 325 (2026) - 16GB RAM - 512GB SSD - Dusk Ash ($1300? Best Buy)

I'm thinking of it as a replacement for the spousal unit's 2014 ASUS laptop (with Kubuntu on it).
They aren't giving it away. It doesn't compete with the Chrome books. It's in its own class.
In 2014, that ASUS laptop was, I think, $800, also not cheap. I don't know what it costs today.

The Googlebooks are not yet on the shelves.
It looks like there would be no problem transferring all the LibreOffice documents over. And even using LibreOffice, installed through a Linux container from a virtual terminal.

Just at the "researching stage" here ...

User Interface in LibreOffice super small after changing my monitor resolution and weird spinny curosor

ukemike — Wed, 23 Sep 2026 22:46:49 GMT

So I'm new and quite happy so far. But after I got my monitor resolution set correctly, the UI elements in LibreOffice are very small. The icons under the dropdown menus are really only about 3mm x 4mm. In the spreadsheet program it defaults to showing me 99 rows and columns from A to BI. I have searched through all the options in LO trying to change the UI scale and I'm stumped. Kerbal Space Program did this too, but I found internal options to correct it all.

Earlier today my pointed started having a spinny animation moving around it. I cannot find any reason that it would be doing that. I'm going to shut down everything one by one and logoff and back on and then reboot to see if any of those steps changes the pointer. Obviously the first question is a bigger concern.

System Crashing - not new but more information - just looking for ideas

LuigiCalamar — Sat, 19 Sep 2026 17:52:17 GMT

I've mentioned before that my system will crash from time to time. I have to unplug my PC to get it back. I've shared some logs and such in the past but I have some more information - just looking for thoughts/ideas if this is making any sense:

At the bottom of this post I'll include my PC specs.

So the main things I'm running on this machine are:

Firefox (often multiple tabs)
QBitorrent
Plex Media Server
Beeper (communication package)
Windscribe (VPN)
I also use Radaar and Sonaar to auto find shows (they don't seem to use much )

That's 95% of my processes.

Usually when it crashes I'm running all the above.

Lately as I've been watching this - it seems that FireFox is by far the largest resource user.... I do have a number of add-ons.
--- of these tabs - I use ProtonMail which seems to be especially resource consuming.

I do 90% of my PC activities in Firefox... so if I'm on my computer I'm likely in Firefox.

Now - as soon as I'm done using my PC I shutdown Firefox... shutdown Beeper (which is also a big user of resources). I typically leave Qbitorrent up - but will often just quit it also (I need to put it on a schedule to only run at night...)

Quitting Firefox (and other apps) seems to greatly reduce my system crashes.

Note: I've also increased my swap from 500gb to 4tb... didn't do much.

If it makes sense that Firefox etal are overloading my system - any ideas how to manage (other than quitting) - or how to better log what is crashing things... (logs haven't done much in the past but perhaps looking for specifics can help?)

Operating System: Kubuntu 26.04 LTS
KDE Plasma Version: 6.6.6
KDE Frameworks Version: 6.24.0
Qt Version: 6.10.2
Kernel Version: 7.0.0-31-generic (64-bit)
Graphics Platform: Wayland
Processors: 16 × 13th Gen Intel® Core™ i7-13620H
Memory: 32 GiB of RAM (31.1 GiB usable)
Graphics Processor: Intel® Graphics
Manufacturer: GMKtec
Product Name: NucBox K7 PLUS
System Version: V1.0

global theme

die.boer — Mon, 14 Sep 2026 19:08:07 GMT

any1 ever tried to install the "stone" global theme from system settings- global theme - get new ??
it was a complete headache lol , but eventually got it going and i love it

i had to bypass/skip the wallpaper dependency

After system crash an app is autostarting - but no autostart entries

LuigiCalamar — Sun, 13 Sep 2026 00:05:58 GMT

I've been having an issue where after a system crash - when I restart kubuntu some app(s) will autostart - but they are not in any autostart entries I can find. I don't want them to autostart but can't find what is causing them to autostart?

[ABANDONED]netflix vs browser wars

die.boer — Mon, 07 Sep 2026 16:59:27 GMT

ok guys i'm looking for some recommendations regarding browsers specifically netflix friendly...
some history with my battles
been on A LOT of distros and a lot of browsers , and all eventually starts giving me grief with netflix not playing properly , quality wise / stuttering.
now i've been on kubuntu couple months and using zen browser and all this time netflix worked perfectly.
until yesterday i decided to use wireless/bluetooth earpods rather than the wired earplugs i've been using all along when on netflix or wherever (i know that shouldn't caused a problem, but here we are)
since then netflix plays crap , even after switching bluetooth off.
i've then tried chrome browser (don't judge lol) which i have installed for a specific site , and 1st off it played netflix with bluetooth earpods fine, for like 10 min. then it started stuttering ...
i then cleared zen's history,cache /pages , about 1GB , but netflix still crap.
now like i said i've been through this before , and i've changed distros cause of it (probably not distros fault) , but i like to experiment anyway lol.
i'm super happy with kubuntu and really don't want to start distro hopping again , just to try goddamn netflix to work , every time all the time ...
so yea , if any1 uses netflix with no problem , i'd like to know which browser ?
cause i think i tried them all