procs

Display information about the active processes.

List all processes showing the PID, user, CPU usage, memory usage, and the command which started them

$ procs

List all processes as a tree

$ procs --tree

List information about processes, if the commands which started them contain zsh

$ procs [zsh]

List information about all processes sorted by CPU time in [a]scending or [d]escending order

$ procs [--sorta|--sortd] cpu

List information about processes with either a PID, command, or user containing 41 or firefox

$ procs --or [PID|command|user] [41] [firefox]

List information about processes with both PID 41 and a command or user containing zsh

$ procs --and [41] [zsh]