Windows Subsystem for Linux (WSL 2) and Jupyter Lab : How to open a Jupyter Notebook saved at the Linux file system?

Question

I have a Jupyter lab installed on Windows. I installed Jupyter Lab on WSL Ubuntu. I can lunch Jupyter Lab from Linux terminal. This will open Jupyter Lab on Chrome browser from which I can start a new Jupyter Notebook with Python [conda env:root]*. However, it only shows the windows file system. I try to open my note book that is saved on the Linux file system using:
$ jupyter lab my_linux_folder/my_notebook.ipynb

Jupyter lab lunches successfully, but cannot open the notebook that is on the Linux file system and gives an error:

Cannot open
Could not find path: /my_notebook.ipynb

Is it possible to open a notebook that is on the Linux file system "\wsl$\" and how?
How to go to "\wsl$\" from JupyterLab file browser?
Or more generally how to open a notebook that is saved under "\wsl$\" ?

Answer 1

WSL 2 issues a dynamic IP address each time you launch WSL 2 -- see MSFT docs.

Personally, I run a Python command within a subshell to print that IP:

jupyter lab --ip $(python3 -c "import subprocess; subprocess.run(['hostname', '-I'], text=True).stdout")

This works for me on Ubuntu 20.04 and Windows 10 build 19041.329.

Note: You'll likely have to visit that IP address instead of localhost, plus the port through which you're running Jupyter, e.g. http://:8888 .

To get my IP address via the CLI I use:

ip addr | grep eth0 | grep inet

I choose the first IP address available, typically using that address without the subnet mask, i.e. the forward slash + number.

Answer 2

Update:

You can access the Linux files by modifying the configuration file. You'll need to allow root access and specify the Jupyter Notebook directory. The directory starts from the root directory of the Linux file system. You can also start from the Windows file system /mnt/c/users/admin/.jupyter.

{
    "NotebookApp": {
        ...
        "allow_root": true,
        "notebook_dir": "/home/admin/.jupyter",
        ...
    }
}

Original:

Is there a particular reason you need to save the Jupyter Notebook files on the Linux file system? WSL has full access to the Windows file system so it shouldn't matter where the file is saved.

To add to Jason's point:

Apparently, WSL 2 uses a virtual network adapter that has its own IP address. It also changes the IP address every time the server is restarted. It got annoying having to manually update the IP address so I wrote a script to update it automatically.

I wrote an article about how to do it to make it easier for everyone:

How to Set Up the Jupyter Notebook Home and Public Server On Windows Subsystem for Linux 2 (WSL2)

The attached photo is a Notebook running on WSL 2 that's saved on the Windows 10 file system.