sed 1d 2023-02.csv > 02.csv #
sed 1d 2023-03.csv > 03.csv #
sed 1d 2023-04.csv > 04.csv #
sed 1d 2023-05.csv > 05.csv #
sed 1d 2023-06.csv > 06.csv #
sed 1d 2023-07.csv > 07.csv #
sed 1d 2023-08.csv > 08.csv #
sed 1d 2023-09.csv > 09.csv #
sed 1d 2023-10.csv > 10.csv #
sed 1d 2023-11.csv > 11.csv #
sed 1d 2023-12.csv > 12.csv #
cp 2023-01.csv flight_2023.csv #
cat 02.csv >> flight_2023.csv #
cat 03.csv >> flight_2023.csv #
cat 04.csv >> flight_2023.csv #
cat 05.csv >> flight_2023.csv #
cat 06.csv >> flight_2023.csv #
cat 07.csv >> flight_2023.csv #
cat 08.csv >> flight_2023.csv #
cat 09.csv >> flight_2023.csv #
cat 10.csv >> flight_2023.csv #
cat 11.csv >> flight_2023.csv #
cat 12.csv >> flight_2023.csv #