Chrome OS comes with Crosh, a Command Shell environment also known as “Chrome Shell.” It is extremely similar to the Windows Command Prompt and the Mac’s Terminal. Users of Crosh can execute a number of commands directly from ChromeOS. In CROSH, the vast majority of Linux commands are restricted. Developer Tools must be enabled in the Google Admin Console in order to be able to run the commands that could compromise the GoGuardian extensions. Readmore: Crosh commands on ChromeOS
So to get on to Chrome OS Developer Shell, cosh you will need to tap “Ctrl + Alt + T”
It should take you here to see some commands type help_advanced. If you want something not so compllated just type help
That’s a few commands. now help_advanced so you much more commands
That alot one commad i know is battery_test.