$ grep '^2023-05-01 07' 30501ge2.csv >> 2023-05-01_07.csv
$ grep '^2023-05-01 08' 30501ge2.csv >> 2023-05-01_07.csv
$ mv -i 2023-05-01_07.csv 2023-05-01_08.csv
$ python3 process_simple.py 2023-05-01_08.csv
> Writing image to: 2023-05-01_08.jpg

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