Hi esteem monks!

I have done a snippet for checking oracle data files by dbv in parralle.I'm afraid trying it in haste maybe cause unpredictable aftermath.(In fact,the system I have been maintaining crushed last month because of my trying of another script.I don't want to be fired due to perl :) So I should find a good and safe way to check my script.Adding print,perl -d or others? Please help me!

Below is my code: 
#!/usr/bin/perl
use strict;
use warnings;

open (FH,"<xyf.lst")  or die "error!! $! \n";
my @file_lists = <FH>;
my $files = \@file_lists;

m_fork(5,$files,\&dbv_check);

sub dbv_check {
my ($file,$logfile)= @_;

system ("dbv","file=$file","blocksize=8192","logfile=$logfile");
}


sub m_fork {
my ($max,$file_list,$dbv_command) = @_;
my $count = 0;
foreach my $file_name (@$file_list) {
wait if $count>$max;
die "error\n" unless defined(my $pid = fork());
exit $dbv_command->($file_name,$count) unless $pid;
$count ++;
}
}

[download]
Thanks in advance!

I am trying to improve my English skills, if you see a mistake please feel free to reply or /msg me a correction

In reply to How debug by xiaoyafeng

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