#!/bin/bash

prefix="sg_"
suffix=".csv"
linesInFile=`wc -l $1 | cut -d' ' -f1`
index=0
dirId=0
maxFiles=5000;
linesPerFile=200000;
old=0
new=0
while [ $new -le $linesInFile ]
do
        dirName="${prefix}${dirId}"
        if [ $index -eq 0 ] ; then
                if [ -e "/home/gmateev/Desktop/test/${dirName}" ] ; then
                        dirId=$((dirId+1))
                        echo "Directory already exists, incrementing"
                        continue
                else
                        mkdir $dirName
                fi
        fi
        old=new
        new=$((new+linesPerFile))
        name="${prefix}${index}${suffix}"
        head --lines=${new} $1 | tail --lines=$linesPerFile > /home/gmateev/Desktop/test/${dirName}/${name};
        index=$((index+1))
        if [ $index -gt $maxFiles ] ; then
                dirId=$((dirId+1))
                index=0
        fi
done