ps
ps is a Linux command in the Process Management category, rated intermediate difficulty. Reports a snapshot of current processes. The syntax is ps [options]. It returns process list. A practical example: ps aux # All processes (BSD style) ps -ef # All processes (standard) ps aux --sort=-%mem # Sort by memory usage ps -u username # Processes for a user A close relative is top, which real-time interactive process viewer. Updates every few seconds. A close relative is kill, which sends a signal to a process. Default signal is SIGTERM (terminate). A close relative is killall, which kills all processes matching a given name. More about this category: Linux process management commands — ps, top, kill, killall, pgrep, and more. Manage running processes and system resources. Related Process Management commands: top, kill, killall, pgrep, pkill, nice, renice, nohup.