TCB13

Some years ago, before LEDs were a thing, I bought an Ultrafire WF-500 Flashlight that features a Xeon light bulb. As you might imagine the bulb reached its lifetime and burned away.

Now a replacement bulb is available here https://www.ebay.com/itm/321916301663 the thing is that it will cost me 35€ and for that price I could just buy a new LED flashlight.

Now I was considering trying to adapt a generic LED bulb like this one here https://www.aliexpress.com/item/1005002419159094.html?mp=1.

Anyone else with this model of flashlight succeed at a similar mod? Any LED bulb recommendations? Or... is there any other source for the original bulb at a lower cost?

Some photos:

• https://cdn.tcb13.com/2023/wf500-bulb.jpg
• https://cdn.tcb13.com/2023/wf500-bulb2.jpg
• https://cdn.tcb13.com/2023/wf500-bulb3.jpg

Thank you.

Some years ago, before LEDs were a thing, I bought an Ultrafire WF-500 Flashlight that features a Xeon light bulb. As you might imagine the bulb reached its lifetime and burned away.

Now a replacement bulb is available here https://www.ebay.com/itm/321916301663 the thing is that it will cost me 35€ and for that price I could just buy a new LED flashlight.

Now I was considering trying to adapt a generic LED bulb like this one here https://www.aliexpress.com/item/1005002419159094.html?mp=1.

Anyone else with this model of flashlight succeed at a similar mod? Any LED bulb recommendations? Or... is there any other source for the original bulb at a lower cost?

Some photos:

• https://cdn.tcb13.com/2023/wf500-bulb.jpg
• https://cdn.tcb13.com/2023/wf500-bulb2.jpg
• https://cdn.tcb13.com/2023/wf500-bulb3.jpg

Thank you.

Hello,

I've been using Armbian on a bunch of ARM SCBs and they have a very nice MOTD on SSH login that shows CPU, RAM, Storage and networking infromation.

Is there anything similar for a regular x86 machine? I tried to grab the scripts from a NanoPi M4v2 board but had to change a ton of stuff to get it working on x86 and it isn't portable as AMD and Intel report temps differently. Or... does anyone know if their x86 version has it working and where to get?

Just for reference I'm talking about this: https://cdn.tcb13.com/2023/armbian-motd.jpg

Thank you.

"This page links to various Linux performance material I've created, including the tools maps on the right. These use a large font size to suit slide decks. You can also print them out for your office wall. They show: Linux observability tools, Linux static performance analysis tools, Linux benchmarking tools, Linux tuning tools, and Linux sar. Check the year on the image (bottom right) to see how recent it is."

After a few conversations with people on Lemmy and other places it became clear to me that most aren't aware of what it can do and how much more robust it is compared to the usual "jankiness" we're used to.

In this article I highlight less known features and give out a few practice examples on how to leverage Systemd to remove tons of redundant packages and processes.

And yes, Systemd does containers. :)

After a few conversations with people on Lemmy and other places it became clear to me that most aren't aware of what it can do and how much more robust it is compared to the usual "jankiness" we're used to. In this article I highlight less known features and give out a few practice examples on how to leverage Systemd to remove tons of redundant packages and processes.

Especially for homelab owners:

Have you ever felt like there might be something wrong with your current approach to installing and managing your services? Have you figured out how massively bloated systems are becoming with Docker and tons of little "helpers" that at the end of the day have dependency issues, are hard to understand and modify? Maybe you just want to squeeze a few extra miles out of a memory-tight system such as a Raspberry Pi. Deep learning Systemd will give you an edge and a better understanding about how your systems work and improve your workflows.

And yes, Systemd does containers. :)

After a few conversations with people on Lemmy and other places it became clear to me that most aren't aware of what it can do and how much more robust it is compared to the usual "jankiness" we're used to.

In this article I highlight less known features and give out a few practice examples on how to leverage Systemd to remove tons of redundant packages and processes.

And yes, Systemd does containers. :)

After a few conversations with people on Lemmy and other places it became clear to me that most aren't aware of what it can do and how much more robust it is compared to the usual "jankiness" we're used to.

In this article I highlight less known features and give out a few practice examples on how to leverage Systemd to remove tons of redundant packages and processes.

And yes, Systemd does containers. :)

Hello,

I'm looking for a unit converter written in JS / client-side only that I can self-host / add to a bunch of tools I already use.

I was looking for a suggestion to get something similar to the good old https://joshmadison.com/convert-for-windows/ but that runs a browser.

Thank you for your suggestions.

Hello,

I've an HP EliteBook 840 G5 that I've been using up until now with Windows 10. I want to replace it with Debian 12 however since this is a laptop I would like to have my disk fully encrypted as well as the boot stage (initramfs etc).

My threat model: make sure if someone stoles the laptop, powered off, they won't be able to access my data. I would also like to avoid evil maid attacks and make sure I'm not booting into some modified kernel / system with spyware or that will leak my TPM keys.

I've found some information online but I'm unsure of how secure those setups are and/or if it isn't even possible to have the same level of security that Windows provides.

Here are a few of my questions:

• Anyone around here that has a similar HP laptop and did this?
• What about enrolling secure boot keys on the UEFI? From what I read simply using the typical Linux shim makes things more secure but it doesn't fix the problem. Enrolling keys seems to break some motherboards
• Even if I use --tpm2-pcrs=1,4,5,7,9 how secure is that, should I add more?
• What is the impact of this in system upgrades? How do I deal with those?
• If I want to proceed with this what I should know / what typically fails or can be problematic / security issue?

Some of the information I found:

• https://0pointer.net/blog/unlocking-luks2-volumes-with-tpm2-fido2-pkcs11-security-hardware-on-systemd-248.html
• https://saligrama.io/blog/post/upgrading-personal-security-evil-maid/
• https://fedoramagazine.org/automatically-decrypt-your-disk-using-tpm2/

Thank you.

Here is what I don't get about Wine. Even in 2023 it seems to fail to handle basic Windows software written in 1996-1995 like the classic convert.exe (https://joshmadison.com/convert-for-windows/). This program and others run flawless in ReactOS for instance, why not under Wine?

Another things I don't get include:

• Why is Wine is still stuck on that Windows 98 style GUI instead of a more modern thing;
• Flickering;
• How can ReactOS, that shares code with Wine, run everything way more smoothly?

For reference I'm using Debian 12, Wine 8.0. Also tried with Soda 7.0, same results.