What is Crosh?

Chrome shell, or Chrosh, is a shell prompt for ChromeOS that allows users to run commands, debug machines, or run tests using Command Line Interface.

You can run Crosh with or without being in Developer Mode. To open Crosh, press ctrl + alt + T and type shell. When in the Crosh environment, the user can run various commands. Here are some common commands to get you started.

Basic commands

To get a list of basic commands in the shell, type help:

crosh> help

To get more commands with their details, type help_advanced:

crosh> help_advanced

Ping

To check network connectivity, type ping followed by hostname or IP address:

crosh> ping {hostname or IP address}

You can use -c to specify how many times you want to ping:

crosh> ping -c {no. of ping} {hostname or IP address}

ssh

To connect to other users, type ssh:

crosh> ssh {user} {host}
OR
crosh> ssh {user} {host} {port}

Memory

To get a detailed breakdown of memory usage, type meminfo:

crosh> meminfo

To do extensive memory testing, type memory_test:

crosh> memory_test

Battery

To know the physical details of the battery (e.g., OEM and model number), type battery_firmware info:

crosh> battery_firmware info

To know details about battery health, type battery_test. You can give the exact time (in seconds) for the test or let it default to 300 seconds:

crosh> battery_test 50

Halt

To stop any process going on in Crosh shell, press ctrl + C.

Close

To close Crosh, type exit:

crosh> exit