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OS Fundamentals
New
Programming

OS Fundamentals

### Course Description: OS Fundamentals The **OS Fundamentals** course provides a comprehensive exploration of core operating system concepts, focusing on process management, scheduling, and resource allocation in Linux-based systems. Students will gain hands-on knowledge of how processes are prioritized and managed within the Linux environment, including an in-depth understanding of "niceness" values and their impact on CPU resource distribution. The course begins with foundational topics such as assigning priority levels to processes, where values range from -20 (highest priority) to 19 (lowest priority). Through practical demonstrations using tools like `top` and `renice`, students will learn how to monitor and adjust process priorities dynamically, ensuring optimal system performance. Additionally, the course delves into advanced concepts such as real-time processes and their dominance over standard processes, equipping learners with the skills to manage complex workloads effectively. A significant portion of the course is dedicated to understanding workload types and their implications for system scalability. Students will explore two primary categories of workloads: I/O-bound and CPU-bound tasks. Using real-world examples, such as PostgreSQL for I/O-bound applications and custom C programs for CPU-intensive tasks, learners will analyze how different workloads affect system resources. The course emphasizes the importance of vertical scaling (adding more resources to a single machine) versus horizontal scaling (distributing workloads across multiple machines) and provides strategies for achieving cost-effective scalability. By leveraging Linux commands like `top`, students will gain insights into CPU metrics, memory usage, and system-level operations, enabling them to diagnose and optimize performance bottlenecks. Throughout the course, students will engage in interactive experiments using Raspberry Pi devices, simulating multi-core environments to observe process behavior under varying conditions. These hands-on exercises will reinforce theoretical concepts and encourage creative problem-solving. By the end of the course, participants will have a solid grasp of Linux process management, workload optimization, and system monitoring techniques. Whether you're a beginner looking to understand the basics of operating systems or an experienced developer aiming to enhance your system administration skills, this course offers valuable insights and practical tools to help you succeed in managing modern computing environments.

0 lessons • Lavidya Admi...
NoSQL Databases (Arabic - عربي)
New
Programming

NoSQL Databases (Arabic - عربي)

Corresponding playlist in English: https://www.youtube.com/playlist?list=PLE8kQVoC67PzgwyzuyMKXc5Q2rcd60N7Y

0 lessons • Lavidya Admi...
CS50x 2026 Lectures
New
Programming

CS50x 2026 Lectures

**Course Description: CS50x 2026 Lectures** CS50x 2026 is Harvard University's renowned introductory course to the intellectual enterprises of computer science and the art of programming, designed for both majors and non-majors. Led by Professor David Malan, this course aims to equip students with the foundational skills necessary to think methodically, communicate precisely, and solve problems efficiently through coding. Whether you're new to technology or already comfortable with it, CS50x offers a welcoming and supportive environment to explore the world of computer science. The course is freely accessible via platforms such as edX, YouTube, Apple TV, Google TV, and CS50's own website, making it available to learners worldwide. By the end of the course, students will have developed the ability to design and implement their own final project, showcasing their newfound programming skills to the world. The course begins with Scratch, a user-friendly graphical programming language that introduces students to coding concepts by allowing them to drag and drop puzzle-like pieces that only fit together logically. As students progress, they transition to C, a traditional keyboard-based language that provides insight into how computers operate "under the hood." The curriculum then moves on to Python, a versatile modern language used for data analysis, automation, and web application development, and SQL, which enables students to manage and query large datasets in databases. Toward the end of the course, students delve into web development using HTML, CSS, and JavaScript, gaining the skills to create both web and mobile applications. Throughout the course, students are supported by a vibrant community and innovative tools, such as a virtual "rubber duck" powered by AI, to help troubleshoot and debug their code. In addition to technical skills, CS50x emphasizes problem-solving and critical thinking by exploring real-world applications of programming. For example, students analyze reading levels of texts using mathematical functions, break down strings to understand how computers process text, and explore cryptography to secure communications. Debugging is another key focus, with lessons on identifying and resolving bugs inspired by historical anecdotes, such as Grace Hopper's discovery of an actual moth causing a system error. By combining theoretical knowledge with hands-on practice, CS50x empowers students to tackle diverse challenges, from simple algorithms to complex software development. This comprehensive approach ensures that students not only learn how to program but also gain the confidence and creativity to innovate in any field they choose.

0 lessons • Lavidya Admi...
كورس Microsoft Excel المتقدم – احتراف الإكسل 2025
New
Data Science

كورس Microsoft Excel المتقدم – احتراف الإكسل 2025

كورس Microsoft Excel المتقدم هو دليلك الشامل لإتقان المهارات الاحترافية في Excel، حيث هنتعلم خطوة بخطوة كيفية التعامل مع الجداول، الدوال المتقدمة، التصفية والفرز، البحث داخل البيانات، وتحليل البيانات باحترافية. سواء كنت طالب، موظف، أو محلل بيانات، الكورس ده هيخليك تشتغل على Excel بكفاءة وسرعة. 📊 🟢 الجزء الأول: إدارة الجداول والبيانات (Manage Tables & Table Data) ✔️ إنشاء وتحويل الجداول: هنتعلم إزاي نحول نطاق من الخلايا إلى جدول ديناميكي يسهل التحكم فيه، وإزاي نرجع الجدول إلى نطاق خلايا عند الحاجة. ✔️ تعديل وتنسيق الجداول: استخدام Table Styles، إضافة وحذف الصفوف والأعمدة، والتحكم في إعدادات أنماط الجداول المختلفة. ✔️ التعامل مع Total Rows: إزاي نضيف صف الإجمالي اللي بيحسب القيم داخل الجدول بشكل تلقائي. ✔️ الفرز والتصفية المتقدمة (Sort & Filter): تصفية البيانات باستخدام Filter & Sort العادي. الفرز بترتيب متقدم بناءً على أكتر من عمود. استخدام Slicer لعمل تصفية أكثر احترافية وسهولة. 📊 🟢 الجزء الثاني: الدوال المتقدمة (Advanced Functions & Formulas) ✔️ الدوال المنطقية (Logical Functions): استخدام دالة IF في القرارات الشرطية البسيطة. الجمع بين IF مع دوال منطقية أخرى زي AND, OR, NOT لعمل شروط أكثر تعقيدًا. الدوال المتداخلة (Nested Functions) لتنفيذ عمليات شرطية متعددة. ✔️ الدوال الإحصائية (Statistical Functions): استخدام SUMIF, AVERAGEIF, COUNTIF لحساب القيم بناءً على شرط معين. استخدام SUMIFS, AVERAGEIFS, COUNTIFS للتعامل مع أكتر من شرط في نفس الوقت. ✔️ دوال النصوص (Text Functions): التعامل مع النصوص باستخدام LEFT, RIGHT, MID, CONCATENATE, UPPER, LOWER, PROPER علشان تنظم البيانات النصية بطريقة احترافية. ✔️ الدوال الزمنية (Date & Time Functions): حساب التاريخ والوقت الحالي باستخدام NOW, TODAY. التعامل مع الأرقام كسلاسل زمنية وتحويلها لتواريخ فعلية. 📊 🟢 الجزء الثالث: البحث داخل البيانات (Lookup & Reference Functions) ✔️ البحث عن القيم باستخدام VLOOKUP, HLOOKUP للوصول إلى البيانات بسرعة. ✔️ تطبيق أمثلة متقدمة على VLOOKUP لمختلف الحالات العملية. ✔️ استخدام INDEX, MATCH كبديل أقوى وأكثر مرونة لـ VLOOKUP في البحث داخل البيانات. كورس Excel متقدم احتراف الإكسل Advanced Excel Course دوال Excel المتقدمة الجداول في Excel الفرز والتصفية في Excel دوال البحث VLOOKUP INDEX MATCH في إكسل دوال Excel الإحصائية دوال النصوص في Excel احتراف تحليل البيانات تعلم Excel للمحترفين كورس Excel بالعربي Advanced Functions in Excel Excel Training 2024 #excel #MicrosoftExcel #Excel_متقدم #احتراف_الإكسل #Excel_Tutorial #Excel_Advanced #VLOOKUP #ExcelFunctions #تعلم_الإكسل #Excel2024 #تحليل_البيانات #Excel_للمحترفين

0 lessons • Lavidya Admi...
Prompt Engineering | هندسة الأوامر
New
Programming

Prompt Engineering | هندسة الأوامر

Imported from YouTube playlist

0 lessons • Lavidya Admi...
Certified Kubernetes Administrator Full Course For beginners | CKA 2025
New
Programming

Certified Kubernetes Administrator Full Course For beginners | CKA 2025

This playlist contains the complete CKA series for beginners, based on the latest 2025 curriculum. It includes 40+ videos with hands-on demos, assignments, and exam-based scenarios. We will cover everything from the basics to the Advanced, including fundamental concepts such as Docker, containers, Docker storage and networking, DNS, etc.

0 lessons • Lavidya Admi...
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