ps
The ps command is a standard Unix/Linux utility used to display information about currently running processes on a system. It provides details such as process IDs (PIDs), CPU and memory usage, execution time, and command names, helping users monitor and manage system resources. Available on most Unix-like operating systems including Linux, macOS, and BSD variants, it is a fundamental tool for system administration and debugging.
Developers should learn ps for system monitoring, troubleshooting performance issues, and managing processes in Unix/Linux environments. It is essential when debugging applications that consume excessive resources, identifying zombie processes, or checking if specific services are running. Common use cases include scripting automation, analyzing server load, and ensuring efficient resource allocation in development and production systems.