UNIX for Dummies Questions & Answers

Ok, so let's say that I have a file like the following:

I want to create 100 replicates of this file, except that for each file, I want different randomized combinations of either A or B at the end of each line so that I would end up with files like the following:

and

etc.

I know the end product I want, but I have absolutely no idea how to go about this or even what kinds of commands I would use.

Thanks.

Assuming that you can use perl, here is a simple script that does what you are looking for:

Code:

#!/usr/bin/perl

@a = <>;

$i=1;
$j=0;

while ($i < 101) {
    open(my $fh, ">", "./file$i.out") || die "ERROR: Failed to open file ./file$i.out";

    select($fh);

    while ($j < $#a + 1) {   
        $c=chr(65 + int(rand(2)));

        print substr($a[$j], 0, -2) . $c . "\n"; 

        $j++;   
    }   

    close($fh);
    $i++;
    $j = 0;
}

Copy these lines into a file named, say, randomize.pl.

Run it as follows (where file1 is the name of your original file):