Script to split file into chunks

split.sh

#!/bin/bash

nchunks=$1
file=$2
nlines=$(wc -l $file)
let n=$nlines/$nchunks
for i in $(seq 1 $nchunks); do
        let startline=$i*$n
        tail -n +$startline $file | head -n $n > $file.$i
done;

!/bin/bash

nchunks=$1
file=$2
nlines=$(wc -l $file)
let n=$nlines/$nchunks
split -l $n $file