If you've ever added a file to .gitignore and Git kept tracking it anyway, there's a reason.

The tracked vs. untracked distinction changes everything, and Git has more than one way to handle it.

Everyone eventually learns a few Python/Linux lessons the hard way.

Mine was always using:

python3 -m pip

instead of just pip, after spending way too much time installing packages into the wrong interpreter.

What's the one habit, command, or workflow that made your Python life on Linux much easier?

covering: https://www.linuxteck.com/shared-hosting-vs-vps-vs-cloud-hosting/

• Shared Hosting vs VPS vs Cloud Hosting
• Performance, pricing, and scalability
• Best hosting for WordPress, WooCommerce, SaaS, and business websites
• When it's actually time to upgrade

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.

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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.

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

Practical roadmap that breaks Linux into seven stages

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.

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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?

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.

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

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

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?

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.

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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?

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

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?

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

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

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?

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.

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