Shell Programming and Scripting

hlow all,
i have file with wc -l file.txt is 3412112 line number
so I want to break these files into several parts with assumsi line
1-1000000 will be create part1.txt and
1000001-2000000 will create part2.txt and
2000001-3000000 will create part3.txt and
3000001-3412112 will create part4.txt and
this will be continue until all line number 3412112 has finish to create

in my mine i using head and tail but i dont know must todo ..any have idea for scripting this ...

thx before

There's a utility for this called split.

Code:

split -d -l 1000000 filename.txt part

If you have split:

Code:

split -l 1000000 file.txt

ow thx for help me...

---------- Post updated 06-25-11 at 12:04 AM ---------- Previous update was 06-24-11 at 10:47 AM ----------

dear all,
i using split and they create part01 part02 part03 ..
in line part01 they create 1-1000000 line number but
i cek in part02 the line number using 1-1000000 too ,same case with part03

i just want if part01 create 1-1000000 line number so part to in line number create 1000001-2000000 line number in file so they synchron line number

i want to create script like this
if search the line number in range 1-1000000 so engine will be using part01 and extract result in file.txt
and if search line number in 1000001-2000000 so engine will be using part02 and extract result in file.txt
same with part03

any idea for this...???

split should work for your needs. If not try this perl script:

Code:

#!/usr/bin/env perl

# Usage: THIS_SCRIPT FILENAME

use warnings;
use strict;

# change for your needs
my $LINES=1000_000;
my $PREFIX='part';

my $cur=1;
my $out=$PREFIX . $cur;
open my $fh,'>', $out or die "$!";

while (<>) {
    if ( !($.%$LINES) ) {
		close $fh;
        $out = $PREFIX . ++$cur;
        open $fh, '>', $out or die "$!";
    }
    print $fh $_;
}

close $fh;

Code:

awk 'NR%1000000==1{fn="part" ++c ".txt"}{print > fn}' file