htop
Htop is an interactive process viewer and system monitor for Unix-like operating systems, providing a real-time, color-coded display of running processes, CPU usage, memory consumption, and system load. It serves as an enhanced alternative to the traditional 'top' command, offering a more user-friendly interface with mouse support, vertical and horizontal scrolling, and the ability to kill or renice processes directly. This tool is widely used by system administrators and developers for monitoring and managing system resources efficiently.
Developers should learn and use htop when they need to monitor system performance, diagnose resource bottlenecks, or manage processes on Linux or Unix-based systems, such as during debugging, server maintenance, or optimizing application performance. It is particularly valuable in DevOps, system administration, and backend development scenarios where real-time insights into CPU, memory, and process activity are crucial for troubleshooting and ensuring system stability.