Freaks City

Inspecting Process Memory Usage Using top PID – Process ID USER – Owner PR – Priority (lower = higher) NI – Nice value VIRT – Virtual memory RES – Physical memory SHR – Shared memory S – State (S=sleep, R=run, Z=zombie, N=negative nice) %CPU – CPU usage %MEM – Physical memory ratio TIME+ – Cumulative CPU time COMMAND – Execu ...

Von Neumann Architecture Concept of Von Neumann Architecture The Von Neumann architecture, also known as the Princeton architecture, defines a computer design where program instructions and data share the same memory space. This model was proposed by mathematician John von Neumann, who outlined three fundamental principles for computer construc ...

CPU Execution Fundamentals The CPU's core function is straightforward: load instructions and execute them. The operating system places the next instruction address into the instruction pointer register, and the CPU fetches, addresses, and executes. Notably, the CPU has no awareness of processes, threads, or coroutines. Process vs Thread: Shared ...

Firewall Management Check firewall status: systemctl status firewalld Start firewall: systemctl start firewalld List all firewall rules and open ports: firewall-cmd --list-all Open a specific port (e.g., 8080/tcp): firewall-cmd --add-port=8080/tcp --permanent Reload firewall to apply changes: firewall-cmd --reload Verify if a port is open: ...

What Is a Process? A program is a static file stored on disk, consisting of executable instructions and data. In contrast, a process represents the dynamic execution of that program, encompassing its creation, scheduling, and eventual termination. Essential Process Management Commands top: Displays real-time system processes sorted by CPU usag ...