ps

Information about running processes. More information: https://keith.github.io/xcode-man-pages/ps.1.html.

List all running processes:

ps aux

List all running processes including the full command string:

ps auxww

Search for a process that matches a string:

ps aux | grep {{string}}

Get the parent PID of a process:

ps -o ppid= -p {{pid}}

Sort processes by memory usage:

ps -m

Sort processes by CPU usage:

ps -r