#Pobranie pliku .csv
curl -OL https://git.wmi.amu.edu.pl/s434695/ium_434695/raw/branch/master/vgsales.csv


#Podzielenie pliku csv na test/dev/train
head -n 1 vgsales.csv > header.csv
tail -n +2 vgsales.csv | shuf > data.shuffled

head -n 3320 data.shuffled > games.data.test
head -n 6640 data.shuffled | tail -n 3320 > games.data.dev
tail -n +6641 data.shuffled > games.data.train

cat header.csv games.data.test > test.csv
cat header.csv games.data.dev > dev.csv
cat header.csv games.data.train > train.csv

#Obcinanie danych
head -n $1 data.shuffled > obcietedane.data
cat header.csv obcietedane.data > obcietedane.csv