https://sckwon.dev/en/tags/linux/ Recent content in Linux on KSC Hugo en-US Tue, 07 Jul 2026 09:00:00 +0900 https://sckwon.dev/en/posts/linux-os-basics/ Tue, 07 Jul 2026 09:00:00 +0900 https://sckwon.dev/en/posts/linux-os-basics/ <h2 id="overview">Overview</h2> <p>Linux is the foundation for understanding server operations and deployment environments. When incidents occur, you always end up checking processes, CPU, memory, disk, networking, logs, and service status.</p> <p>This post organizes the topics you&rsquo;ll frequently revisit in Linux / OS. Beginners can learn the concepts, while experienced engineers can quickly reference commands and decision criteria.</p> <h2 id="1-processes-vs-threads">1. Processes vs Threads</h2> <details class="interview-answer"> <summary>Details</summary> <div class="interview-answer-body"> <p><strong>Concepts</strong></p> <p>A process is a unit of a running program. The OS allocates independent memory space (code, data, heap, stack) to each process. Processes don&rsquo;t share memory by default, so one crashing doesn&rsquo;t directly affect others.</p>