use https://github.com/beckenrode/mysql-workbench-export-laravel-5-migrations

split_migrations_for_el5m.pl

#!/usr/bin/env perl


open(FP, "< data.txt") or die("Error");
my @migrations = split(/Table name: .*?Migration File: /s, join('', <FP>));
close(FP);

my $cnt = 1;
my %files = ();
foreach my $migration (@migrations) {
    $migration =~ /^(.*?)\n+(.*?)\n*$/s;
    $file_name = $1;
    $file_body = $2;

    next if (!$file_name);

    $tmp = sprintf('%06d', $cnt);
    $file_name =~ s/000000/$tmp/;
    $files{$file_name} = $file_body;
    $cnt++;
}

mkdir './out' if (! -d './out');
foreach my $key (keys %files) {
    open(FP, "> ./out/$key");
    print FP $files{$key};
    close(FP);
}