Linux for Beginners
Linux for Beginners.
Linux
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Linux Directory Structure for DevOps Context
Understand key Linux directories relevant to containers and logs.
Troubleshooting with ip, ss, dig, curl
Essential network tools every engineer should know.
Environment Variables and Profiles
Set up and manage shell environments.
User, Group, and sudo Management
Control access and manage privileges effectively.
Advanced Environment Management
Taking Your DevOps Skills to the Next Level.
Understanding DNS and Name Resolution
How DNS and /etc/hosts affect your services.
Cron and Systemd Timers
Schedule tasks the Linux way.
Managing Services with systemd
Start, stop, enable, and debug services on Linux.
SSH Configuration and Port Forwarding
Secure and flexible remote access and tunnels.
Firewall Management (UFW/nftables)
Lock down access to your cloud-hosted apps.
Linux Package Management (APT, DNF)
Install, remove, and manage packages like a pro.
Building from Source (make, gcc)
Compile and install from source when needed.
Performance Tools (top, htop, iostat)
Quickly check CPU, memory, and IO performance.
Disk Usage and Cleanup (df, du, ncdu)
Avoid system crashes due to full disks.
Logs and journalctl
Read and understand logs to debug like a ninja.
Permissions in Container Volumes
Handle file access issues inside containers.
Linux Signals (SIGTERM, SIGINT, SIGKILL)
How shutdowns and kills affect apps.
Container-safe Linux Users
Avoid root and set correct users for containers.
Mastering systemd: Running Custom Apps as Linux Services
Learn how to create and manage .service files to deploy apps like a pro, automate restarts, and integrate your services into the Linux ecosystem — the DevOps way.
Archiving and Transferring (tar, gzip, rsync)
Move and store files efficiently.
Terminal Boost with tmux and Zsh(oh my zsh)
Enhance your shell experience.
SSH Tunnels to Expose Localhost
Share local services securely.
Managing Multiple SSH Keys
Work with GitHub, AWS, and more..
Hostnames in the Age of the Cloud: Do They Still Matter?
In this post, we explore whether hostname configuration still plays a role in modern DevOps. Spoiler: It does — just not where you expect. From logging and monitoring to Ansible inventories and TLS certs, hostnames still have their quiet place in the chaos of the cloud.
Exit Codes and Debugging Scripts
Fix broken scripts with exit codes.
Text Stream Magic (tail, grep, less)
Process logs and output like a wizard.
Essential Linux CLI Tools
Install and use tools like htop, ncdu, bat.
Mastering VIM Editor – Shortcuts for the Modern DevOps Engineer
Master the VIM text editor with essential navigation, editing, and DevOps-specific commands.