Linux Process Management: Commands I Use to Keep Systems Healthy
Processes are the running programs on your system. Here is how I monitor, manage, and troubleshoot them in production. Every program running on Linux is a process. Understanding how to monitor, manage, and troubleshoot processes is essential for keeping systems healthy. After managing dozens of servers, these are the commands and techniques I use daily to understand what is happening on a system and fix problems before they escalate. Viewing Processes with ps The ps command lists running processes. I use ps aux for a full system view or ps -ef for a tree-style display showing parent-child relationships. The output shows the process ID (PID), CPU and memory usage, the user, and the command that started the process. # All processes with CPU and memory usage ps aux # Find a specific process ps aux | grep nginx # Process tree showing parent-child relationships pstree -p # Processes for a specific user ps -u alice I use ps aux --sort=-%cpu | head -10 to quickly find the top CPU-consuming processes. The same trick with -%mem finds memory hogs. These one-liners are the first thing I run when a server…