random function script

Shell Programming and Scripting
1

hi,

I need a command which picks the records randomly from the file.
For example. i am having some 10000 entries in a file and need to extract the lines randomly without repeating the numbers.

Do anybody have any idea on how to get this out.

2

#!/bin/bash

RANGE=1000
number=$RANDOM
let "number %= $RANGE"
echo "Random number less than $RANGE --- $number"

3

Alternative , in Python:

>>> import random
>>> length = 10000
>>> all = open("file_with_records.txt").readlines()
>>> for num in range(0,length-1):
... 	randnum = random.randint(0,length-1) #generate random num
... 	print all[randnum]
4

#!/usr/bin/perl

use strict;
my $limit = 10000;

my $random_number = int (rand $limit);
print "random number: $random_number \n";

5

Thanks a lot,

This is working now :slight_smile: