Tag: Linux

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Educators to Follow on Mastodon for Innovative Teaching Insights

I have been using Mastodon for almost six years. I continue to be amazed at the quality of discourse and the diverse community of educators and folks interested in education in the Fediverse. If you are a person who is accustomed to algorithm driven centralized social networks then Mastodon is going to seem a bit unusual at first. If you are WordPress user you can connect your blog to Mastodon with the ActivityPub plugin. You don’t need a blog to connect to Mastodon. You just need to create an account on anyone of dozens of Mastodon instances that exist around the world. One you are connected to an instance you can find other users and connect to them whether they are on your particular server instance or not.

Mastodon communications are driven by hashtags which many of you are already familiar with. Some of my favorites are #edtech

A toot on Mastodon is typically five hundred characters long. Like other microblogging platforms you may have used before brevity is prized but there’s more than enough space to get your information across and then you use hashtags to let your audience know what your toot is about.

Here’s a list of twenty-one educators currently using Mastodon.

Eric Sheninger – @esheninger@mastodon.social
Sandy Kendell – @SandyKendell@mastodon.education
Wesley Fryer – @wfryer@mastodon.cloud
Martin Dougiamas – @martin@openedtech.social
Alice Barr – @alicebarr@techhub.social
Miguel Guhlin – @mguhlin@mastodon.education
EdTech Group – @edtech@chirp.social
Clint LaLonde – @clintlalonde@mastodon.oeru.org
Doug Holton – https://mastodon.social/@dougholton
Anna Millis – @amills@mastodon.oeru.org
Open at Virginia Tech – @openatvt@fosstodon.org
SPARC – @sparc@mastodon.social
Project Gutenberg – @gutenberg_org@mastodon.social
Smithsonian Magazine – @Smithsonianmag@flipboard.com
Steven Beschloss – @StevenBeschloss@mastodon.social
Bill Fitzgerald = @funnymonkey@freeradical.zone
WikiEducation – @WikiEducation@wikis.world
CreativeCommons – @creativecommons@mastodon.social
Edutopia – @edutopia@mastodon.education
Cognitively Accessible Math – @geonz@mathstodon.xyz
NPR – @npr@mastodon.social
Open Source Science – @os-sci@mastodon.social

In conclusion, Mastodon offers a refreshing alternative to traditional, algorithm-driven social networks. Its decentralized nature and vibrant community provide an enriching environment for educators and those passionate about education. Whether you’re sharing your thoughts, discovering new ideas through hashtags, or connecting your WordPress blog with the ActivityPub plugin, Mastodon opens up a world of possibilities. Embrace the change and dive into meaningful conversations on this unique platform. Happy tooting!

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The shift to ARM and the rise of Linux integration

Apple’s computers switched from Intel X86 to ARM in 2020 when the company nnounced the M1 in November 2020. Since that time they have continued to release more ARM processors and now they have the M4 and M4 plus. ARM which stands for Advanced RISC machine. ARM is a CPU that uses a reduced instruction set and does not require a separate GPU. All the processing occurs on one chip. ARM processors are designed to be cost effective, consume less power and generate less heat than their X86 counterparts.

Not only does the ARM processor consume less power and cost less but it also has the processing power to effectively power large language models on individual personal computers and AI image generating software very quickly and robustly. Since Apple introduced the ARM processors in their computers there has been a drive to bring ARM to Linux. The Asahi Linux project aims to bring the power of Linux to Apple Silicon Macs. Pinebook Pro has brought Linux to an ARM processor powered notebook computer. Their machine is meant to deliver a solid day-to-day Linux experience.

Manjaro comes preinstalled on Pinebook Pro which can also run Debian, Arch, Armbian, BSD, Gentoo, Fedora, OpenSuse and Q4OS. Despite the progress there is still a shortage of ARM equipped computers for Linux folks to use. System76 recently announced a server line which will be powered by ARM chips. For now Linux users will have to satisfy themselves with the Pinebook Pro and Raspberry Pi 5 which are both wonderful examples of ARM computers.

Microsoft’s Surface Pro is another great example of an ARM powered mobile computer but to date I have not read of anyone installing Linux on it.

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Balancing Power and Portability: The journey of a technophile

When I attended All Things Open a year ago, I carried a Hewlett-Packard DevOne, which I had purchased the year before. Two years ago, I was anxious to try the DevOne because I wanted to try an AMD Ryzen 7 with Linux. It was a platform I had never used. I have been a solid Intel user for Windows, MacOS, and Linux. I liked the size and feel of the computer, but in an all-day conference where I attended all the keynotes and other sessions using the computer for note-taking, tweeting, and tooting, I was disappointed in the battery life.

I came home, put the laptop for sale on E-bay, and decided I was going to buy one of the newer 15-inch M2 MacBook Air computers. I have enjoyed using the MacBook to experiment with Stable Diffusion, DiffusionBee, Llamafile, Ollama, and other applications. I took the MacBook to a half-day conference in mid-April and have used it sparingly since then, but I was determined to give an actual test at All Things Open earlier this week. It surpassed all my expectations for its exceptional battery life. I attended all the keynotes and many sessions where I took notes and live-tooted what I was seeing and hearing, and at the end of the day, each day, I had around seventy percent of battery life. That is simply amazing.

I’m not ready to ditch Linux. I’m writing this article on my main desktop, which runs Linux Mint Cinnamon, but I am impressed with the battery life of the M2 MacBook Air. I have found the M2 chip equal to almost everything I have used it for. Apple has introduced the new MacBook Pro with an M4, sixteen gigabytes of RAM, and 512 GB drive with three Thunderbolt ports and HDMI. I came close to buying one today. I learned while I was at All Things Open that it might make sense for me to get a MacBook with a bit more RAM to continue experimenting with locally hosted large language models.

Being a technophile has its rewards and challenges, and I am presented with another one now. Apple will give me a five hundred eighty dollar trade-in on the M2 MacBook Air. The new MacBook Pro has a fourteen-inch display, and the MacBook Air has a fifteen-inch display. I like the larger display, but there is no doubt that there are compelling reasons to go with the newer, more powerful MacBook Pro with lots of expansion. Should I pay another two hundred dollars for a terabyte of storage, or should I stay with the stock of five hundred twelve gigabyte drives? Lots of decisions.

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Ensuring Data Security Through Disk Erasure

Many people choose to encrypt their disk drives because it is one way of ensuring that your data stays secure and safe from the prying eyes of others. I always shy away from encrypting my disk because I don’t have theneed for that kind of security. When one of my computers reaches end or life or I decide to sell it then I take special measures to ensure that all the information is erased. II am also frequently called on to help clients to help them dispose of an old computer when they purchase a new one. What do you do when selling a computer or replacing an old spinning rust drive with a newer solid state drive? That’s when I think of securely erasing them to ensure that confidential information is removed before repurposing or disposing of them. 

Fundamentally, disk erasure on Linux serves as a versatile solution that tackles security, compliance, performance, and sustainability needs, catering to the varied demands of users. Whether for individual usage or organizational requirements, disk erasure is a forward-thinking strategy in data management and information security.Here are five commands to erase a disk on Linux:

Here are five command sequences to ensure that data is securely erased from your Linux data drive(s).

dd command:

$ sudo dd if=/dev/zero of=/dev/sdX bs=1M

This command writes zeros to the entire disk, effectively erasing all data.

shred command:

$ sudo shred -v /dev/sdX

The shred command overwrites the disk multiple times, making data recovery very difficult.

wipe Command:

$ sudo wipe -r /dev/sdX

The wipe command is designed to securely erase disks by overwriting them with random data.

blkdiscard Command (for SSDs):

$ sudo blkdiscard /dev/sdX

This command discards all data on the specified SSD, effectively erasing it.

parted and mkfs Commands:

$ sudo parted /dev/sdX mklabel gpt
$ sudo mkfs.ext4 /dev/sdX

Using parted to create a new partition table followed by mkfs to format the disk erases the existing data.

Replace /dev/sdX with your actual disk identifier. Always double-check the device identifier before running any of these commands to avoid accidental data loss.

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DIY Bootable Linux Disk Creation Without Internet Access or Additional Tools

I keep a bootable Linux disk with me most of the time because I never know when I am going to need to use one to rescue a crashed Microsoft Windows machine or turn someone on to the Linux desktop. Most distributions include my own daily driver Linux Mint Cinnamon have utilities that make boot disk creation much easier than it used to be. If you are on a Windows or MacOS platform you could use a great utility like Etcher.io which is one of my favorite boot disk creation tools. But let’s suppose that you are using a Linux computer with no connection to the internet and no other disk creation tools.

You could use dd which is tool that many folks have never used but it’s still a reliable utility and one that can make a bootable disk when all else fails. The dd command is a Linux utility that is sometimes referred to as ‘disk destroyer’ or ‘data duplicator and it is very useful and effective if you have no other way to create a bootable USB drive.

You will need a FAT32 formatted USB drive. Then you will need to determine the directory in which the iso file bearing the Linux distribution resides so that you can point to it in your command sequence. You will also need to use the lsblk command to determine which block device you are going to send your data to. Use of the dd command without good information can be devastating to the health of your system as it is easy to overwrite the wrong drive like your boot and/or data drive.

With your USB stick inserted into your computer open a terminal issue the following command:

$ lsblk

You should receive an output that looks something like this.

$ /dev/sdb1 or /dev/sdc1

Unmount the drive with the following command. 

$ sudo umount /dev/sdX1

 Use the dd command to write the ISO file to the USB drive:

$ sudo dd if=/path/to/linux.iso of=/dev/sdX bs=4M status=progress

Replace /path/to/linux.iso with the path to your ISO file and /dev/sdX with the correct device identifier

After the dd command completes, you can verify that the data was written correctly by chechecking the output of lsblk or fdisk -1.

Once the process is complete, safely eject the USB drive:

$ sudo eject /dev/sdX

Now you are ready to start using your newly created Linux boot drive to rescue Windows systems or turn somene on to using Linux.

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Fastfetch: High-Performance Alternative to Neofetch for System Information Display

Yesterday I wrote about Neofetch which is a tool that I have used in the past on Linux systems I owned. It was an easy way to provide a good snapshot of the distribution I was running and some other pertinent information about my computing environment. One of my readers replied to let me know that the project was no longer being maintained. It was last updated in August 2020. The commenter suggested that I check out Fastfetch. I thanked the reader and followed the link he provided to the Github repository for Fastfetch.

The project maintains that it is, “An actively maintained, feature-rich and performance oriented, neofetch like system information tool.” It is easy to install and provides much of the same information that was provided by Neofetch. However, it does supply your IP address but the project maintains that presents no privacy risk. The installation for Fedora and RPM based distributions is familiar by entering the following command. 

$ sudo dnf install fastfetch

If you are a Ubuntu based distribution like my Linux Mint daily driver then the installation requires the download of the appropriate .deb file. Once the package was installed on my system I decided to try it.

Screen picture by Don Watkins CC by SA 4.00

Fastfetch can be easily installed on a MacOS with Homebrew. I decided to try it on my MacBook.

Screen picture by Don Watkins CC by SA 4.0
% brew install fastfetch

Fastfetch is written in C with 132 contributors. It is open source with an MIT license. In addition to Linux and MacOS systems you can install Fastfetch on Windows with Chocolatey. The project states that Fastfetch is faster than Neofetch and it is actively maintained. Fastfetch has a greater number of features than it’s predecessor and if you want to see them all enter the following command. For more information and examples be sure to visit the project wiki

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Neofetch: The Universal System Info Display Tool

Neofetch, hosted on the reputable and active project homepage at the Github repository, is designed to create system configuration screenshots on various platforms. The primary difference between Neofetch and ScreenFetch lies in its broader support; it extends beyond Fedora, RHEL, or CentOS and provides compatibility with almost 150 different operating systems, including lesser-known ones like Minix and AIX!

The Neofetch installation procedure is equally straightforward:

Debian and Ubuntu users use the following command:

$ sudo apt install neofetch

For Fedora and other RPM-based distributions use the following command:

$ sudo dnf install neofetch
Screen picture by Don Watkins CC by SA 4.0

You can also install neofetch on other operating systems including MacOS. 

$ brew install neofetch
Screen picture by Don Watkins CC by SA 4.0

Once installed, Neofetch provides a standard system info display that can be further modified for your specific preference: image files, ASCII art, or even wallpaper, to name a few; all these customizations are stored in the .config/neofetch/ directory of the user’s home folder.

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In search of the right GPU

I rely on my powerful Intel NUC with an i7 processor and 64 GB of RAM for my daily computing needs. However, it lacks a GPU, which makes it unsuitable for the experimentation I’ve been conducting with locally hosted large language models. To address this, I use an M2 MacBook Air, which has the necessary power for some of these tasks.

I had helped some local folks purchase a refurbished Dell computer from a refurbisher. They began to experience difficulty with it in a couple of months and when they did it was beyond the ninety day warranty. Rather than see them lose their money I wrote them a check for the original purchase price.

I believe that when you do good things that you will be rewarded in some fashion. I helped these folks purchase a new Dell Inspiron desktop which has a full factory warranty and when I was about to leave their home they asked me if I wanted to take the defective computer. I thought I might be able to fix it or use it for parts. I removed the cover and discovered that this Optiplex 5060 with an i5 CPU didn’t have a traditional hard drive like I had thought but instead was equipped with a Western Digital SN 270 NVME drive. I also discovered that the only thing wrong with the unit was a bad external power switch. Once I removed the front bezel I was easily able to power the device on.

Karma was working once again in my favor as I have found it does when you do for others as youu would have them do for you. I erased the Windows 11 install and installed Linux Mint 22 in it’s place. This unit also had two open low profile expansion slots and I wondered if I could find a graphics card with a GPU that would allow me to experiment with Ollama and other LLMs. I did some research and decided to purchase a XFX Speedster SWFT105 Radeon RX 6400 Gaming Graphics Card with 4GB from Amazon. The card came a couple days later and I installed it in one of the expansion slots.

After installing the card I placed the cover back on the machine, connected a spare Sceptre 27 inch display and an ethernet cable to it and downloaded Ollama and the Phi3 model. I downloaded and installed the ROCm modules which are helped Ollama to recognize the GPU. Ollama states that it recognizes the GPU when it finished installing the software. I think Ollama and the Phi3 module run faster with this unit. But maybe that’s wishful thinking. I also wanted to try Stable Diffusion on this computer and used Easy Diffusion which I have installed on the NUC before. I was frustrated to discover that my RX6400 card and GPU don’t work with EasyDiffusion. Am I missing something? Is there a fix?

I hope that if you’re reading this and you know of a fix for this issue that you would share it. I’d love to find and answer. Nonetheless, doing good for others always results in good coming back to you.

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How to Switch from RAID to AHCI in BIOS for Better SSD Performance

I’m always shopping for laptops to outfit with Linux and one of my favorite stops is DellRefurbished.com. On the weekend while surfing that site I came upon a good deal on a Dell Latitude 5410 laptop. The (new to me machine) came with an i7 processor. Using the ‘inxi’ command it easy to see that this laptop was a good bargain at forty-five percent off a list price of $399.

The battery is in great shape for a three-year-old laptop that weighs a little bit over three pounds. I’ve been using Dell Computers with Linux loaded on them for over twenty years. However, lately, these Latitude 5410s have come with Intel Rapid Storage Technology for use with the Windows 10 Professional operating system that came pre-installed on the laptop. Linux Mint would not install when starting from a live USB drive.

The solution that I quickly found when upgrading one of these laptops a couple of weeks ago is as follows:

When starting up the Latitude press the F2 function key to enter the BIOS and look for the SATA controls and change from RST to AHCI. Save the settings in your BIOS restart the computer and complete the installation of Linux Mint.

For more information on this particular issue, you should consult the excellent documentation from Ubuntu. https://help.ubuntu.com/rst/

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Sharing Tech for Good: How I Gifted My Neighbor a Refurbished Linux Mint Laptop

I volunteer with Meals on Wheels once a week, and one of the clients on my route is a man my age. We frequently spend time visiting when I bring his meal to him. Last week, when I stopped, he asked me if I could help him put his laptop computer back in working order. I told him I’d do him one better—installing Linux Mint on his ailing computer and extending its life.

After checking with him about the model of his laptop, I discovered that it was a lightly powered notebook with minimal disk storage. I had a five-year-old System76 Darter Pro just sitting around gathering dust. I decided to install Linux Mint Cinnamon 22, which is my daily driver. Though the Darter Pro is five and a half years old, it’s still got lots of life in it. It has an Intel i7 CPU with 16 gigabytes of RAM and a 250 gigabyte NVME drive, which would be a fantastic host for my client.

When I shared my decision with him, he was delighted, and though he trusted my judgment, he knew nothing about Linux Mint and wondered if he could master the learning curve. I told him that Mint Cinnamon has many similarities with the Windows 10 desktop he used to. I searched YouTube and other sites for an excellent introduction to Linux Mint and could not find the kind of documentation I wanted to give to my friend. I decided to write my documentation, complete with screenshots of the critical first steps to get started with a Linux Mint laptop.

This is the first screen you see after you start up the laptop. His name is Tom, and I shared his password in the documentation. I knelt next to him as I helped him through these first steps.

Linux Mint Login screen

The next thing he sees is the Welcome to Linux Mint splash screen. I provide a brief explanation and then encourage him to return here later to refer to the documentation and help information.

I direct his attention to the screen’s lower right-hand corner and guide him through the connection to his wireless access point and network connection.

I explained to him that the fourth item from the left is the ‘network connection’ icon, and he needs to click on it to display the wireless networks that are available to connect with. We quickly found his local connection.

He was unsure of his wireless password, but after some reflection and connecting with others who connect to his internet service provider, I remembered that they use the client’s mobile phone number for a password. That worked well, and we were connected. I walked him through installing the necessary updates on his new Linux laptop. I quickly demonstrated the security of Linux systems as each update required his password. Linux Mint comes with Firefox by default but I also showed him how to add the Google Chrome browser and some other applications using the software manager.

Eventually, I showed him how to use most of the essential tools of this new Linux Mint computer, including ‘Nemo’, the Linux Mint file manager.

After almost forty-five minutes of initial setup and instruction, he was ready to dive in and experience Linux Mint firsthand. This morning, I received an email from Tom, and it warmed my heart. He said, “I was on my new computer till 11:00 last night. I’m like a kid with a new toy. I want to thank you for the info you sent on linux.I perused the emails and quickly learned I would never be a Linux expert…Again, a thousand thanks for the laptop. I was in a bind, and you really got my feet from the fire. Sincerely, tom.”

His email made my day, so I love to share the Linux and open-source journey with others. We can extend the hardware’s life and demonstrate the effectiveness of the open-source approach.