https://randhana.com/blog Thoughtful work. Real impact. en-us pulathisi.kariyawasam@gmail.com (Pulathisi Kariyawasam) pulathisi.kariyawasam@gmail.com (Pulathisi Kariyawasam) Sat, 02 May 2026 00:00:00 GMT https://randhana.com/blog/cve-2026-31431-simplified-explanation-for-cs-students https://randhana.com/blog/cve-2026-31431-simplified-explanation-for-cs-students A detailed breakdown of CVE-2026-31431 - understanding how a kernel page cache vulnerability allows privilege escalation from regular user to root access through cryptographic socket exploitation. Sat, 02 May 2026 00:00:00 GMT pulathisi.kariyawasam@gmail.com (Pulathisi Kariyawasam) vulnerabilitykernellinuxcybersecurity https://randhana.com/blog/guide_to_nginx https://randhana.com/blog/guide_to_nginx Learn everything about NGINX, from installation to advanced configurations. Fri, 21 Feb 2025 00:00:00 GMT pulathisi.kariyawasam@gmail.com (Pulathisi Kariyawasam) Web ServersLinuxNginx https://randhana.com/blog/how-to-install-apache-server-on-ubuntu https://randhana.com/blog/how-to-install-apache-server-on-ubuntu Step-by-step guide to installing Apache server on an Ubuntu system, complete with command samples and explanations. Sun, 19 Jan 2025 00:00:00 GMT pulathisi.kariyawasam@gmail.com (Pulathisi Kariyawasam) ubuntuapacheinstallationlinux https://randhana.com/blog/linux-copycache-clipboard-manager https://randhana.com/blog/linux-copycache-clipboard-manager How I built a lightweight, fast clipboard manager for Linux using PyQt6 and automated PyPI publishing with GitHub Actions - showcasing the power of AI-assisted development in creating polished desktop applications. Sat, 14 Mar 2026 00:00:00 GMT pulathisi.kariyawasam@gmail.com (Pulathisi Kariyawasam) linuxpythonpyqt6desktop-appai-assisted-codingpypigui https://randhana.com/blog/server-monitor-agentless-linux-monitoring https://randhana.com/blog/server-monitor-agentless-linux-monitoring How I built Server Monitor - a self-hosted tool that watches a group of Linux servers over plain SSH, with nothing installed on them and no dependency on outside services - with AI-assisted development. Sun, 11 Oct 2026 00:00:00 GMT pulathisi.kariyawasam@gmail.com (Pulathisi Kariyawasam) linuxpythonfastapisshsqlitemonitoringsecurityai-assisted-coding https://randhana.com/blog/understanding-signals-in-linux https://randhana.com/blog/understanding-signals-in-linux Ctrl+C doesn’t just kill a process it sends a signal. In this article, we explore what signals are, how they work in Linux, and how you can handle them in real programs. Sat, 16 Aug 2025 00:00:00 GMT pulathisi.kariyawasam@gmail.com (Pulathisi Kariyawasam) linuxsignalsprogrammingcprocess management