Linux

Learn how to manage Linux services with systemctl and view logs with journalctl. Step-by-step commands for starting, stopping, enabling, checking status and troubleshooting for beginners.

Learn what Linux environment variables are, how they work, and why they matter for shells, scripts, and services. Practical examples and simple tips to view, set, export, and persist variables for DevOps beginners.

Learn how to use grep and awk to search, filter, and transform text files in Linux. Step-by-step examples and practical tips for Linux and DevOps beginners.

Learn how to manage log files like a pro on Linux servers with practical tips on viewing, rotating, monitoring, and troubleshooting. Practical guidance for Linux and DevOps beginners to keep systems reliable and compliant.

Learn how to install, update, and remove software packages with APT, the Debian/Ubuntu package manager. Step-by-step commands, tips, and best practices for Linux and DevOps beginners.

Learn how to schedule recurring tasks on Linux using crontab and systemd timers. Step-by-step guidance, examples, and tips for DevOps and Linux beginners.

Learn step-by-step methods to diagnose and fix network connectivity issues in Linux, from interfaces and DNS to routing and firewall checks. Practical tips and commands ideal for Linux and DevOps beginners.

Master Linux networking basics: learn how to configure IP and DNS settings step-by-step. A clear, practical guide for Linux and DevOps beginners to set up networking and troubleshoot common issues.

Learn Linux file permissions and ownership basics, including rwx bits, users, groups, and chmod/chown usage. Practical examples and commands for Linux and DevOps beginners to secure and manage files.