How to remove previous version from Jupyter?

Question

I have two versions of Julia in my Jupyter. Please see the following picture.

Julia 0.5.0 is not working, as it shows "kernel error". I want to delete it from the Programming Language Drop-down list. Can anyone tell me how to delete it? Thank you for your help.

Answer 1

Run jupyter kernelspec list on the command line to get the paths of all your kernels.

It would show kernel names like

Available kernels:
  julia-1.0    /home/user/.local/share/jupyter/kernels/julia-1.0
  julia-1.1    /home/user/.local/share/jupyter/kernels/julia-1.1
  python3      /home/user/anaconda3/share/jupyter/kernels/python3

And then you can run

jupyter kernelspec uninstall julia-1.0

to remove the old kernel that you want to remove.