Last updated: July 18, 2020
“Shell” refers to the macOS or Linux shell – in other words, the command line interface you get when you open the Terminal on a Mac.
Similar to Activity Monitor on a Mac, it can be helpful to monitor resources and processes in the shell.
topis the basic built-in command for this that should be on any *nix system.
htopis also available on Linux but isn’t installed by default on macOS.
glancesis more or less a Python version of
Elsewhere in the KB
tmuxis a tool for shell window management and persistance.