Cloud Shell includes a built-in visual code editor. Designed as a simplified WebIDE, it enables you to conduct development directly in a production environment from a single page, while also allowing you to execute or deploy commands through the command line.
Steps:
1) Click the Code icon in the toolbar to open the code editor.
The editor appears as in the following image.
2) Use the code editor to navigate the $HOME folder to view and edit files. You can continue using Cloud Shell at the bottom of the page.
Note
By attaching a File Storage NAS file system through Cloud Shell, you can ensure that the edited files are permanently stored.