cannot quit jupyter notebook server running

Section 3.3 should be applicable to this.
http://jupyter-notebook-beginner-guide.readthedocs.io/en/latest/execute.html

When a notebook is opened, its “computational engine” (called the kernel) is automatically started. Closing the notebook browser tab, will not shut down the kernel, instead the kernel will keep running until is explicitly shut down.

To shut down a kernel, go to the associated notebook and click on menu File -> Close and Halt. Alternatively, the Notebook Dashboard has a tab named Running that shows all the running notebooks (i.e. kernels) and allows shutting them down (by clicking on a Shutdown button).

I ran into the same issue and followed the solution posted above. Just wanted to clearify the solution a little bit.

netstat -tulpn

will list all the active connections.

tcp    0   0 0.0.0.0:8888  0.0.0.0:*  LISTEN      19524/python

you will need the PID “19524” in this case. you can even use the following to get the PID of the port you are trying to shut down

fuser 8888/tcp

this will give you 19524 as well.

kill 19524

will shut down the port

Windows Systems commands on Command Prompt

Be careful to save all the changes made in your notebooks prior to kill the jupyter notebook server process.

i) find the port number used by jupyter notebook server

jupyter notebook list

ex.)

jupyter notebook list
Currently running servers:
http://127.0.0.1:8888/ :: D:kimkkDocumentsJupyterNotebook

ii) find process ids that use the found port number of jupyter notebook

netstat -ano | find "found portnumber"

ex.)

netstat -ano | find "8888"

  TCP    127.0.0.1:8888         0.0.0.0:0              LISTENING       24140
  TCP    127.0.0.1:8888         127.0.0.1:55588        ESTABLISHED     24140
  TCP    127.0.0.1:8888         127.0.0.1:55612        ESTABLISHED     24140
  TCP    127.0.0.1:55588        127.0.0.1:8888         ESTABLISHED     6492
  TCP    127.0.0.1:55612        127.0.0.1:8888         ESTABLISHED     6492

• find rows with second column value equals to “8888”. In above example first, second, and third rows are target rows. In those rows, you can find PID in the last column (ex. 24140).

iii) kill jupyter notebook process with found PID

taskkill /PID found_PID /F

ex.)

taskkill /PID 24140 /F

• /F means forcely kill the process.

FYI, Jupyter notebook from version 5.1 supports stop command as follows:

jupyter notebook stop 8888

refer to https://github.com/jupyter/notebook/issues/1950

This might help:

1. run jupyter notebook list to get the port number jupyter uses.
2. run lsof -n -i4TCP:[port-number] to get PID.
   The PID is the second field in the output.
3. run kill -9 [PID] to kill this process.

Use the following command to stop Jupyter notebook running on port 8888:

fuser -k 8888/tcp 

On your notebook the welcoming page is named “Files” and you can see “Running” next to it. There is where you would want to shutdown and see the running notebooks

Here’s a bash script that will kill ALL active Jupyter notebook servers at one go, based on the answers given by @Joalito and @Hongsoog:

#!/bin/bash
jupyter notebook list | {
  while IFS= read -r line
  do
    port=`echo "$line" | grep -o -P '(?<=localhost:).*(?=/ :)'`
    echo "killing jn in port $port"
    if [ -z "$port" ]
    then
      netstat -tulpn | grep "$port" | grep -o -P '(?<=LISTEN      ).*(?=/py)' | xargs kill -15
    fi
  done
}

What worked for me was

1. jupyter notebook list, which in my case returned:

http://localhost:8889/?token=77d01d687da830b74eba946060660d :: /gpfs/blah/
http://localhost:8889/?token=1243162854ee3648e3154b26643794 :: /ifs/hello/world/

2. netstat -tulpn | grep "8888", which in my case returned:

tcp        7      0 127.0.0.1:8888          0.0.0.0:*               LISTEN      17602/python3.9

And I found the PID in the last column: 17602.

3. kill -9 17602, which freed up the port.