Rewrite to bash script

preparations.sh

@@ -1,2 +1,25 @@
-curl -OL https://git.wmi.amu.edu.pl/s434784/ium_434784/who_suicide_statistics.csv
+#curl -OL https://git.wmi.amu.edu.pl/s434784/ium_434784/raw/branch/master/who_suicide_statistics.csv
 
+# uciecie nazw kolumn 
+head -n 1 who_suicide_statistics.csv > names.csv
+
+# Randomizacja zbioru.
+shuf who_suicide_statistics.csv > data.shuf
+#cp who_suicide_statistics.csv data.shuf
+
+# Podzial na 3 pozbiory
+
+#Ustalenie proporcji 6:2:2
+let NUMROWS=$(cat data.shuf | wc -l)
+let TEST=$((NUMROWS / 10 * 2 ))
+let DEV=$((NUMROWS / 10 * 4 ))
+let TRAIN=$((NUMROWS - DEV ))
+
+head -n $TEST data.shuf > data.test
+head -n $DEV data.shuf | tail -n $TEST  > data.dev
+head -n $NUMROWS data.shuf | tail -n $TRAIN > data.train
+
+echo "Test rows ${TEST}"
+echo "Dev rows ${DEV}"
+echo "Train rows ${TRAIN}"
+echo "All number of rows ${NUMROWS}"