After logging in to google colab, click on the folder on the left, and there is a terminal at the bottom. After clicking, you can execute commands on the terminal. But this terminal is relatively stuck, so it is not recommended to use it.
Note:
Title: the name of the notebook
Code block: the code executed in blocks
File browse: the instance space allocated by Colab for the notebook
Code execution program: the server used to execute the notebook program
Code segment: Commonly used code segments, such as loading the cloud drive
command panel : Commonly used commands, such as find/replace
Terminal: Terminal under file browsing (very stuck, not recommended)