Start JupyterLab on port 8888 without opening a browser
JupyterLab is the web IDE for notebooks, Python and R kernels, and data files. The --no-browser flag skips auto-launching a browser, which matters when running on a remote server, and --port 8888 fixes the listening port. The printed URL contains a token that grants access, so keep it private. On a remote host, tunnel the port with ssh before visiting it.
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