i have two machines connected via lan. other system\'s ip address is 192.1xx.x.x i want to run jupyter ipython query\'s on my machine which can be exexuted on his machine. a
You can specify the port you want Jupyter to run uncommenting/editing the following line in ~/.jupyter/jupyter_notebook_config.py:
#c.NotebookApp.port = 8888
In case you don't have a jupyter_notebook_config.py try running jupyter notebook --generate-config. See this for further details on Jupyter configuration.
In case you are accessing Jupyter at a remote machine you can also try just leaving Jupyter running at its default port and make an SSH tunnel to your local machine at the port you want, e.g.:
ssh -fNL :localhost:8888