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Pro.Tecmint Weekly #2: sed Tips, RHCSA Chapters 7–15, and Upcoming UbuntuHand

In this week’s Pro.Tecmint Weekly: 10 sed one-liners, RHCSA chapters 7–15, storage tools, SELinux, firewalls, and an exclusive look at our upcoming UbuntuHand course + eBook.

— Ravi Saive

Pro.Tecmint Weekly #2: sed Tips, RHCSA Chapters 7–15, and Upcoming UbuntuHand
Pro.Tecmint Weekly #2: sed One-Liners, RHCSA Chapters 7-15, and UbuntuHand Sneak Peek

Hey folks! 👋

Welcome to the second edition of Pro.Tecmint Weekly - your easy weekly update on all things Linux, straight from the command line.

This week, we added a bunch of new RHCSA chapters and step-by-step guides to help you feel more confident with Linux.

🔧 CLI Tricks: sed One-Liners You’ll Actually Use

We started the week with a handy guide on 10 practical sed one-liners every Linux user should know. From deleting blank lines to quickly replacing text in files, these examples are simple, useful, and easy to use in your day-to-day tasks. It’s a great little cheat sheet worth saving for later!

10 sed One-Liners Every Linux Admin Should Know
In this article, we explore 10 beginner-friendly sed one-liners that show how to search, replace, and manipulate text directly from your terminal.
TecMint Pro - Premium Linux Guides, eBooks & TutorialsRavi Saive

📘 RHCSA Prep Series: Chapters 7-15 Now Live!

We added a bunch of new chapters this week - eight in total! If you're preparing for the RHCSA exam or just want to get a better understanding of how Linux works under the hood, these chapters are a great place to start.

Chapter 15: How to Create Local HTTP Yum/DNF Repository
In this chapter, you’ll learn how to create a local YUM/DNF repository on RHEL 9 using an ISO file and serve it over HTTP with Nginx, allowing offline package installations.
TecMint Pro - Premium Linux Guides, eBooks & TutorialsRavi Saive
Chapter 14: How to Install and Configure Stratis on RHEL
In this chapter, you’ll learn how to install and configure Stratis on RHEL to manage local storage using pools, thin provisioning, and filesystems.
TecMint Pro - Premium Linux Guides, eBooks & TutorialsRavi Saive
Chapter 13: How to Use SELinux in RHEL
In this chapter, we explore SELinux basics, including modes, contexts, and booleans, to help you control system access and secure services like SSH and Apache.
TecMint Pro - Premium Linux Guides, eBooks & TutorialsRavi Saive
Chapter 12: How to Use Firewalld and IPtables on RHEL
In this chapter, we explore firewalld and iptables in RHEL, covering setup, rules, zones, and key differences between the two firewall tools.
TecMint Pro - Premium Linux Guides, eBooks & TutorialsRavi Saive
Chapter 11: How to Use DNF, RPM, Cron Jobs, and Logs
Learn how to install, update, and remove packages using DNF and RPM, automate tasks with cron, and monitor Linux logs in this Red Hat beginner guide.
TecMint Pro - Premium Linux Guides, eBooks & TutorialsTecmint Pro
Chapter 10: How to Set Up SSH and Configure Network Settings
A practical guide to setting up secure remote access and configuring basic networking on RHEL using SSH, hostnamectl, nmtui, and systemctl tools.
TecMint Pro - Premium Linux Guides, eBooks & TutorialsRavi Saive
Chapter 9: How to Install & Mount NFS and Samba Network Shares
Learn how to work with file system formats like XFS, manage ACLs, and install & mount NFS and Samba network shares in Red Hat Enterprise Linux.
TecMint Pro - Premium Linux Guides, eBooks & TutorialsRavi Saive
Chapter #8: How to Configure System Storage with LVM and SSM
In this chapter, learn how to configure system storage in RHEL using classic tools like parted, LVM, and the simplified System Storage Manager (SSM).
TecMint Pro - Premium Linux Guides, eBooks & TutorialsTecmint Pro
Chapter 7: How to Operate and Manage Running Linux Systems
In this article, we cover everything you need to manage active Linux systems, including services, processes, logs, scheduling, and secure file transfers.
TecMint Pro - Premium Linux Guides, eBooks & TutorialsRavi Saive

📚 What’s Coming Next?

We’re working on something new called UbuntuHand - a beginner-friendly Ubuntu course and eBook that’s full of hands-on examples and real-world tips.

It’s about 20% done, and we’re planning to launch it by the end of July. If you're already a Yearly or Lifetime Pro member, you'll get the UbuntuHand eBook automatically - plus access to our other 8 Linux eBooks as a bonus.

Now’s a great time to go Pro! You can become a TecMint Pro member for life with a one-time payment, or choose affordable yearly access - no subscriptions, no renewals, and absolutely no ads.

👉 Subscribe to TecMint Pro →

Thanks again for being a Pro member - your support keeps the Linux learning flowing. We’ll be back next week with more chapters, cheat sheets, and tools to sharpen your skills.

Until then, stay curious and keep typing man like you mean it. 😄

- Ravi & the Pro.Tecmint Team