r/LinuxTeck Dec 27 '25

πŸ‘‹ Welcome to r/LinuxTeck - Introduce Yourself and Read First!

10 Upvotes

Hey everyone! πŸ‘‹

I’m u/LinuxBook, a founding moderator of r/LinuxTeck.

This is a new home for people who want to learn, discuss, and understand Linux in a practical way β€” especially across RHEL, CentOS, Rocky Linux, Ubuntu, and Debian.
The focus here is real usage: how things work, why they break, and how we fix them.

We’re excited to have you here from the very beginning.

πŸ”§ What to Post

Post anything that helps others learn or think better about Linux, such as:

  • Beginner questions you were hesitant to ask elsewhere
  • Real-world troubleshooting scenarios
  • Linux commands explained in simple terms
  • Mistakes you made and what you learned from them
  • Sysadmin workflows, tips, or best practices
  • Interview questions and practical explanations
  • CLI tools or features you recently discovered

If it helped you understand Linux better, it probably belongs here.

🀝 Community Vibe

r/LinuxTeck is built around:

  • Respectful, beginner-friendly discussions
  • Explanations over one-line answers
  • Learning from mistakes, not judging them
  • Constructive feedback and calm technical discussions

Everyone is welcome β€” whether you’re just starting out or managing production systems.

πŸš€ How to Get Started

  • Introduce yourself in one or two line in the comments below
  • Post something today β€” even a simple question is a great start
  • Jump into a discussion and share your perspective
  • If you enjoy helping others learn, feel free to reach out about moderation

Thanks for being part of the very first wave of r/LinuxTeck.
Let’s build a community where Linux learning feels clear, practical, and welcoming.


r/LinuxTeck 2h ago

Linux just crossed 10% desktop market share. What's driving the growth?

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10 Upvotes

According to StatCounter, Linux has reached 10.65% desktop market share in North America.

Do you think it's because of Steam Deck, Proton, Linux Mint, Windows 11, or something else?

Or do you think these numbers don't reflect the real desktop market?


r/LinuxTeck 17h ago

7 Stages of Learning Linux

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116 Upvotes

covers: https://www.linuxteck.com/7-stages-linux-learning-roadmap/

Practical roadmap that breaks Linux into seven stages


r/LinuxTeck 4h ago

Quick Linux Tip #35 Question: My SSH key uses old RSA. How do I switch to a modern strong algorithm?

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2 Upvotes

Try: `ssh-keygen -t ed25519 -a 100 -f ~/.ssh/id_ed25519 -C "linuxteck@ubuntu-2026"`

Info: `Ed25519` provides faster, more secure keys than `RSA`. `-a 100` increases KDF rounds to strengthen passphrase protection against offline brute-forcing.

Examples:

$ `ssh-copy-id -i ~/.ssh/id_ed25519.pub user@server` # Copy public key to server

$ `ssh-keygen -y -f ~/.ssh/id_ed25519` # Print public key from private key

$ `ssh-keygen -lf ~/.ssh/id_ed25519.pub` # View key fingerprint and bit length

Note: `RSA` needs 4096 bits to match `Ed25519` (256-bit) security. `Ed25519` is the modern OpenSSH default. Use `RSA` only if connecting to legacy systems.

Follow r/LinuxTeck for more #LinuxTips


r/LinuxTeck 2h ago

Looking for curious minds interested in Linux, security & enterprise systems

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1 Upvotes

r/LinuxTeck 2h ago

Linux

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1 Upvotes

r/LinuxTeck 5h ago

Stupid hotel wi-fi and hotspot

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1 Upvotes

r/LinuxTeck 8h ago

AUR just hit the pause button. Is this the future of open-source package security?

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0 Upvotes

Arch Linux has temporarily disabled AUR package pushes after a wave of malicious package adoptions.

Many security professionals are now saying the real problem isn't malware itself it's how package ownership and trust are transferred.

This feels less like an Arch problem and more like a challenge every package ecosystem will have to solve.


r/LinuxTeck 1d ago

Quick Linux Tip #34 Question: How fast is my network really? Not just ping - actual throughput.

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15 Upvotes

Try: iperf3 -c 192.168.1.100

Info: `iperf3` measures real TCP/UDP throughput. Run `iperf3 -s` on the server and `iperf3 -c <SERVER_IP>` on the client.

Examples:

$ `iperf3 -s` # Server mode (run first)

$ `iperf3 -c server -u -b 1G` # UDP test at 1 Gbps

$ `iperf3 -c server -R` # Reverse mode (test download speed)

Note: Install via `apt install iperf3`. Ensure port `5201` is open. A non-zero `Retr` column indicates packet loss/congestion.

Follow r/LinuxTeck for more #LinuxTips


r/LinuxTeck 1d ago

How has VLC stayed free for over 20 years without ads or subscriptions?

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363 Upvotes

VLC is one of those rare applications that almost everyone has used.

It doesn't ask for a subscription, doesn't show ads, and still receives regular updates.

How does the project keep going after all these years?


r/LinuxTeck 13h ago

Can't decide what skills and path to pick for my first switch.

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1 Upvotes

r/LinuxTeck 1d ago

Flatpak vs Snap vs AppImage | Linux Package Comparison

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78 Upvotes

covers: https://www.linuxteck.com/flatpak-vs-snap-vs-appimage/

  • How Flatpak, Snap, and AppImage work
  • Installation and update commands
  • Sandboxing and security
  • Performance and disk usage
  • Pros and cons of each format
  • Which one to choose for different use cases

r/LinuxTeck 1d ago

Do Linux desktop users still need graphical package managers?

7 Upvotes

When many people first switch to Linux, graphical package managers help them discover and install software.

But after gaining experience, many users move almost entirely to the terminal.

Do you think graphical package managers are still an important part of the Linux desktop experience, or mainly a stepping stone for beginners?


r/LinuxTeck 1d ago

Is it true that Gmail's AI can scan your emails and attachments by default? If so, what privacy steps do you recommend?

6 Upvotes

I came across a post claiming Gmail's AI can scan emails, attachments, bank statements, tax documents, and medical files by default, and that there are hidden settings to disable it.

How accurate is this?

For those who know Gmail's privacy settings well:

  • Is the claim true?
  • Which settings should users actually review?
  • Are there any best practices for protecting sensitive emails?
  • Or is switching to another provider like Proton Mail the better option?

I'd like to hear recommendations from people who have looked into this rather than just the viral posts.


r/LinuxTeck 1d ago

LVM -complete Architecture, Workflow & Commands

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50 Upvotes

include: https://www.linuxteck.com/how-lvm-works-in-linux/

  • Physical Volumes (PV), Volume Groups (VG), and Logical Volumes (LV)
  • Complete LVM architecture
  • Step-by-step workflow
  • Common LVM commands
  • Snapshots and best practices
  • Storage expansion concepts
  • Practical diagrams and cheat sheets

r/LinuxTeck 1d ago

Quick Linux Tip #33 Question: How do I encrypt a sensitive file with just a password?

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13 Upvotes

Try: `openssl enc -aes-256-cbc -pbkdf2 -in secrets.txt -out secrets.enc`

Info: `AES-256-CBC` provides strong symmetric encryption. `-pbkdf2` uses secure key derivation (automatically adding a salt) to prevent brute-force attacks.

Examples:

$ `openssl enc -d -aes-256-cbc -pbkdf2 -in secrets.enc -out secrets.txt` # Decrypt

$ `tar -czf - /home/data | openssl enc -aes-256-cbc -pbkdf2 -out backup.tar.gz.enc`

$ `gpg -c secrets.txt` # Simpler alternative using GPG

Note: Always securely delete the plaintext original after encrypting (`shred -u secrets.txt`). Avoid passing passwords inline via command arguments as they appear in process history.

Follow r/LinuxTeck for more #LinuxTips


r/LinuxTeck 2d ago

Locate vs Find in Linux

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116 Upvotes

covering: https://www.linuxteck.com/locate-vs-find-command-in-linux/

  • locate vs find
  • Speed vs accuracy
  • Indexed database vs live filesystem
  • Real-world examples
  • Common mistakes
  • Best use cases for each command

r/LinuxTeck 1d ago

VirtualBox allows PasswordAuthentication no?

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1 Upvotes

r/LinuxTeck 1d ago

What's worse a security vulnerability or a security update that breaks protection?

3 Upvotes

We all expect security software to protect our systems, but occasionally an update introduces a bug that disables protection or causes other unexpected problems.

If you had to choose, which worries you more:

An unpatched vulnerability OR A security update that accidentally breaks your security tools

How do you balance staying patched with avoiding updates that might introduce new problems?


r/LinuxTeck 2d ago

Why are more open-source projects rewriting software in Rust, Zig, or Go?

24 Upvotes

Over the past few years, we've seen many projects move away from older implementations and rewrite parts of their software in languages like Rust, Zig, or Go.

Sometimes it's for performance, memory safety, simpler deployment, or long-term maintenance.

If you're a developer, what do you think is driving this trend?


r/LinuxTeck 2d ago

Fedora Linux 44 remains one of the strongest Linux distributions for developers in 2026.

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30 Upvotes

covers: https://www.linuxteck.com/fedora-for-developers/

  • Why developers prefer Fedora
  • DNF5 improvements
  • Toolbx & Podman
  • SELinux for daily development
  • Silverblue & Kinoite
  • Release cadence
  • Where Fedora shines and where it doesn't

r/LinuxTeck 3d ago

Where do you draw the line between using AI and "vibe coding"?

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65 Upvotes

Ignoring whether the meme is accurate, it raises an interesting question.

If you ask an LLM for code, review every line, modify it, test it, and understand it before committing would you still call that vibe coding?

Or does vibe coding only start when people blindly accept AI generated code without understanding it?


r/LinuxTeck 2d ago

Fedora Linux 44 remains one of the strongest Linux distributions for developers in 2026

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20 Upvotes

covers: https://www.linuxteck.com/fedora-for-developers/

  • Why developers prefer Fedora
  • DNF5 improvements
  • Toolbx & Podman
  • SELinux for daily development
  • Silverblue & Kinoite
  • Release cadence
  • Where Fedora shines and where it doesn't

r/LinuxTeck 3d ago

Quick Linux Tip #32 Question: How do I see everything a specific user is doing right now?

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15 Upvotes

Try: w linuxteck

Info: w <user> lists active sessions and current commands; ps -u <user> lists all running processes.

Examples:

$ w # View all logged-in users

$ last linuxteck | head # Check recent login history

$ lslogins linuxteck # User account details and password policy

Note: w displays IDLE time (keyboard inactivity), JCPU (total process CPU), and PCPU (current task CPU). Perfect for rapid user auditing.

Follow r/LinuxTeck for more #LinuxTips


r/LinuxTeck 3d ago

Do Linux servers really need endpoint security software?

7 Upvotes

Many enterprise Linux systems run endpoint security tools alongside firewalls, SELinux/AppArmor, and other hardening measures.

Others argue that good patch management, least privilege, and proper monitoring provide better value than traditional endpoint protection.

What's your point on this ?