On command line, I could open a directory like:
code .
Now, I want two of the identical diretory opened and displayed in another window.
You can do this with the following ways:
1- Manually open a new window (ctrlshiftn) and go to:
File > Add folder to Workspace. Then just select the folder.
2- Open the command panel (ctrlshiftp) enter dupl
and hit enter that will duplicate the current workspace in a new window
*dupl
is just a filter for the complete command that is: Workspaces: Duplicate Workspace in New Window
thanks to dipnlink comment
Source: https://code.visualstudio.com/docs/editor/multi-root-workspaces
*Done in windows (10), vscode (1.35.1)