Linux and DevOps

🔰 TCM - Linux Privilege Escalation for Beginners

🏷 Course info: Get Info

📅 Updated: 08-2025 ✔️

🔓 Password: @LinuxMastery

🔅 PREMIUM CHANNELS -◦-◦--◦--◦-◦--◦--◦-◦--◦--◦-◦--◦- 🔰 The Coding Space -◦-◦--◦--◦-◦--◦--◦-◦-- 219k| 🔰 Linkedin Learning Courses 133k| 🔰 Premium Udemy Courses 130k| 🔰 Web Development -◦-◦--◦- 112k| 🔰 Learn Python 098k| 🔰 JavaScript Courses 083k| 🔰 Machine Learning -◦-◦--◦- 065k| 🔰 DevOps Tutorials 062k| 🔰 Data Analysis and Databases 062k| 🔰 Learn React and NextJs -◦-◦--◦- 056k| 🔰 Linux and DevOps 046k| 🔰 100 Days of Python 044k| 🔰 Best Telegram Channels -◦-◦--◦- 044k| 🔰 ChatGPT Mastery 043k| 🔰 Business Training 038k| 🔰 Zero to Mastery -◦-◦--◦- 038k| 🔰 Mobile Development 037k| 🔰 Udemy Learning 033k| 🔰 Codedamn Courses -◦-◦--◦- 033k| 🔰 Linkedin Learning 032k| 🔰 React 101 030k| 🔰 Crypto Lessons -◦-◦--◦- 028k| 🔰 Coding Interview 024k| 🔰 Telegram's Shorts -◦-◦--◦--◦-◦--◦--◦-◦-- 🔰 Add Your Channel -◦-◦--◦--◦-◦--◦--◦-◦--◦--◦-◦--◦- 🔰 2hrs on top & 8hrs in channel!

📂 Full description One third of all mail servers run on Postfix, the open-source mail transfer agent. As a Linux administrator, there's a good chance that you may be asked to set up, manage, or troubleshoot Postfix—and a 100% chance of encountering questions about Postfix on the RHCE certification exam. If you want to pass the RHCE exam and demonstrate your expertise in Red Hat Enterprise Linux, you need to master Postfix. This course covers Postfix configuration and management, including relaying and forwarding, on Linux. Learn how to install and set up Postfix as your default mail transport agent (MTA) and review how email is routed and headers are written. Learn the commands needed to administer Postfix, and decipher the nine different configuration files. Grant McWilliams—Linux expert and author of the RHCE Cert Prep¬ series—also shows how to create aliases and virtual mail groups. The lessons culminate in the fourth chapter, which explains how to set up a local Postfix mail server and relay all mail in the network, including email from remote users, to your mail server.

🔅 Linux System Engineer: Mail Systems Using Postfix 🌐 Author: Grant McWilliams 🔰 Level: Intermediate ⏰ Duration: 1h 2m

🌀 Learn how to set up email with Postfix, the mail transport agent for Linux, and study for Postfix-related questions from the RHCE certification exam.

📗 Topics: Linux 📤 Join Linux and DevOps for more courses

🔰 Linux Crash Course - The stat command

The ls command is often the go-to tool for checking a file’s attributes, such as permissions, ownership, and timestamps.

But what if you need more detailed information about a file or even the file system it resides on? That’s where the stat command comes in.

The stat command, short for “status,” is a powerful utility in Linux that provides detailed insights into files and file systems.

While ls gives a quick overview, stat dives deeper, offering comprehensive data like block size, inode number, and security context. It's especially handy for examining file timestamps, such as the last access, modification, or change times.

🔰 How does SPF works?

Sender Policy Framework (SPF) is an email authentication protocol that helps verify that emails are sent from authorized servers for a specific domain. It prevents email spoofing by allowing domain owners to publish a list of authorized mail servers in their DNS records. Receiving mail servers then use this list to validate the sender's identity.

🔅 PREMIUM CHANNELS -◦-◦--◦--◦-◦--◦--◦-◦--◦--◦-◦--◦- 🔰 The Coding Space -◦-◦--◦--◦-◦--◦--◦-◦-- 219k| 🔰 Linkedin Learning Courses 132k| 🔰 Premium Udemy Courses 129k| 🔰 Web Development -◦-◦--◦- 110k| 🔰 Learn Python 097k| 🔰 JavaScript Courses 080k| 🔰 Machine Learning -◦-◦--◦- 064k| 🔰 DevOps Tutorials 061k| 🔰 Learn React and NextJs 061k| 🔰 Data Analysis and Databases -◦-◦--◦- 054k| 🔰 Linux and DevOps 046k| 🔰 100 Days of Python 044k| 🔰 Best Telegram Channels -◦-◦--◦- 042k| 🔰 ChatGPT Mastery 042k| 🔰 Business Training 037k| 🔰 Mobile Development -◦-◦--◦- 037k| 🔰 Zero to Mastery 036k| 🔰 Udemy Learning 033k| 🔰 Codedamn Courses -◦-◦--◦- 033k| 🔰 Linkedin Learning 032k| 🔰 React 101 030k| 🔰 Crypto Lessons -◦-◦--◦- 028k| 🔰 Coding Interview 024k| 🔰 Telegram's Shorts -◦-◦--◦--◦-◦--◦--◦-◦-- 🔰 Add Your Channel -◦-◦--◦--◦-◦--◦--◦-◦--◦--◦-◦--◦- 🔰 2hrs on top & 8hrs in channel!