Python: Jupyter notebook change default directory path under linux Ubuntu 16.04

Change the default directory path of Jupyter notebook in a single time

1) In terminal cd to the target directory:

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1. cd ~/Coding  

2)  Open the jupyter notebook terminal:

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1. lab@Sukie:~/Coding$ jupyter notebook  

jupyter_notebook_config.pyNote: The premise of this method is not to make any changes to the configuration file of the Jupyter notebook .