UNIX for Dummies Questions & Answers

#!/bin/bash
var1=`wc -l $filename`
var2=$var1/$splitno
split -l $var2 $1

$ split -5 singlefile

$ wc -l infile | nawk -v n=3 '{print "expr "$1" / "n"|bc" }' | sh | sed 's,^,split -,g;s,$, infile,g' | sh

#!/bin/bash
wc -l 1.txt | awk -v n=3 '{print "expr "$1" / "n"|bc" }' | sh | sed 's,^,split -,g;s,$, 1.txt,g' | sh

$ seq 13 > infile

$ awk '{a[NR]=$0}END{for(i=1;i<=NR;i++)print a[i] > "outfile" 1+int(n*((i-1)/NR))}' n=3 infile

$ head outfile*
==> outfile1 <==
1
2
3
4
5

==> outfile2 <==
6
7
8
9

==> outfile3 <==
10
11
12
13

$