demande d'aide en perl

bonjour
je suis nouvelle dans ce forum et en perl et je dois ecrire un programme qui permet de lire le journal d'evenement(eventlog) et de le transferer vers un fichier texte l'ennuis est que je dois le filtrer prendre les 20 dernières entrées ou les entrées d'hier à aujourd'hui mais j'arrive pas à le faire. voici le programme que j'ai:

use Getopt::Long;
use Time::Local;
use Win32::EventLog;

$SEC = 1;
$MIN = 60 * $SEC;
$HOUR = 60 * $MIN;
$DAY = 24 * $HOUR;

%EVENT_TYPE = (
#eval EVENTLOG_AUDIT_FAILURE => 'AUDIT_FAILURE',
#eval EVENTLOG_AUDIT_SUCCESS => 'AUDIT_SUCCESS',
eval EVENTLOG_ERROR_TYPE => 'ERROR',
eval EVENTLOG_WARNING_TYPE => 'WARNING',
#eval EVENTLOG_INFORMATION_TYPE => 'INFORMATION',
);

%Config = (
log => 'system',

);
Configure( \%Config );
if( $Config{help} )
{
Syntax();
exit;
}
if( defined $Config{date} )
{
my( $Year, $Month, $Day ) = ( $Config{date} =~ /^(\d{4}).(\d{2}).(\d{2})/ );
$TIME_LIMIT = timelocal( 0, 0, 0, $Day, $Month - 1, $Year - 1900 );
}
elsif( $Config{hour} || $Config{day} )
{
$TIME_LIMIT = time() - ( $DAY * $Config{day} ) - ( $HOUR * $Config{hour} );
}

if( ! scalar @{$Config{machine}} )
{
push( @{$Config{machine}}, Win32::NodeName );
}

if( defined( $Config{type} ) )
{
foreach my $Mask ( @{$Config{type}} )
{
# Try referencing the EVENTLOG_xxxx_TYPE and EVENTLOG_xxxxx
# constants. One of them is bound to work.
$EVENT_MASK |= eval( "EVENTLOG_" . uc( $Mask ) . "_TYPE" );
$EVENT_MASK |= eval( "EVENTLOG_" . uc( $Mask ) );
}
}
else
{
map
{
$EVENT_MASK |= 0 + $_;
}( keys( %EVENT_TYPE ) );
}

# Tell the extension to always attempt to fetch the
# event log message table text
$Win32::EventLog::GetMessageText = 1;
open ( RES,'>>c:\Resultat_System.txt');
select (RES);
$~ = EventLogFormat;
foreach my $Machine ( @{$Config{machine}} )
{
my $EventLog;
if( $EventLog = Win32::EventLog->new( $Config{log}, $Machine ) )
{
my %Records;
local %Event;
local $Count = 0;

while( ( $EventLog->Read( EVENTLOG_BACKWARDS_READ
| EVENTLOG_SEQUENTIAL_READ,
0,
\%Event ) )
&& ( $Event{TimeGenerated} > $TIME_LIMIT ) )
{
# Display the event if it is one of our requested
# event types
$Count++;
write if( $Event{EventType} & $EVENT_MASK );
}
}
else
{
print "Can not connect to the $Config{log} Event Log on $Machine.\n";
}
}
close RES;
sub Configure
{
my( $Config ) = @_;

Getopt::Long::Configure( "prefix_pattern=(-|\/)" );
$Result = GetOptions( $Config,
qw(
machine|m=s@
log|l=s
type|t=s@
hour|h=i
day|d=i
date=s
help|?
)
);
$Config->{help} = 1 if( ! $Result );
push( @{$Config->{machine}}, Win32::NodeName() ) unless( scalar @{$Config->{machine}} );
}

sub Syntax
{
my( $Script ) = ( $0 =~ /([^\\]*?)$/ );
my $Whitespace = " " x length( $Script );
print<< "EOT";

Syntax:
$Script [-m Machine] [-t EventType] [-l Log]
$Whitespace [-h Hours] [-d Days] [-date Date]
$Whitespace [-help]
-m Machine......Name of machine whose Event Log is to be examined.
This switch can be specified multiple times.
-t EventType....Type of event to display:
ERROR
WARNING
INFORMATION
AUDIT_SUCCESS
AUDIT_FAILURE
This switch can be specified multiple times.
-l Log..........Name of Event Log to examine. Common examples:
#Application
#Security
System
This switch can be specified multiple times.
-h Hours........Will consider events between now and the specified
number of hours previous.
-d Days.........Will consider events between now and the specified
number of days previous.
-date Date......Will consider events between now and the specified
date. Date is in international time format
(eg. 2000.07.18)
EOT


}

format EventLogFormat =
--------------------------------
@>>>>> @<<<<<<<<<<<<<<<<<<<<<<<<<<<<< ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$Event{RecordNumber}, "\\\\" . $Event{Computer}, $Event{Message}
@<<<<<<<<<<<<<<<<<<<<<<<<<<<< ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
scalar localtime( $Event{TimeGenerated} ), $Event{Message}
Type: @<<<<<<<<<<<<<<<<<<<<<< ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$EVENT_TYPE{$Event{EventType}}, $Event{Message}
Source: @<<<<<<<<<<<<<<<<<<<< ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$Event{Source}, $Event{Message}
~ ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$Event{Message}
~ ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$Event{Message}
~ ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$Event{Message}
~ ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$Event{Message}
~ ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$Event{Message}

.

j'ai vraiment besoin d'aide.
merci d'avance.

Tout d'abord, bienvenue sur le forum.

Si tu veux obtenir une réponse à ton message, il faut que tu suives un certain nombre de règles:

1. entourer ton code de balises CODE (bouton # de l'interface), et indenter le code
2. isoler ton problème pour poster uniquement la partie qui pose problème. Plus le message est court, plus de personnes auront le courage de le lire, et donc plus tu auras de chances d'obtenir une réponse

Là, ton message est un peu long, et surtout illisible

Bonsjour,

Essaye aussi de mettre un titre plus explicite, ya rien de plus énervant qu'un topic du genre help me, ou j'ai besoin d'aide...