@echo off
chcp 950
call C:\Users\fred\anaconda3\Scripts\activate C:\Users\fred\anaconda3
jupyter lab >C:\Users\fred\AppData\Roaming\.anaconda\navigator\scripts\jupyterlab-out-2.txt 2>C:\Users\fred\AppData\Roaming\.anaconda\navigator\scripts\jupyterlab-err-2.txt