I have a script that compares the mtime of a file with timelocal set back 24 hours.
If the mtime is less then the timelocal it removes the file.
I am trying to modify it so we have the option to save files whatever number of days back we would like.
The subroutine is below the way it is now it does not reduce the timelocal to less then previous day file's mtime.
How should I do the calculation so it reduces the timelocal back more then one day?

sub clean_up() {
my ( $mtime ) = ( stat $_ )[9];

my $BACKUP_TIME = $params->get("Backup.Tape.Start");
my $SERVER = $params->get("Backup.Server");
my $SAVE_DAYS = 1;
my $SAVE_DAYS = $params->get("Backup.Save.Days") if ( $params->exists(
+"Backup.Save.Days") );
my ( $BACKUP_HOUR, $BACKUP_MIN );

if ( $BACKUP_TIME =~ /^\d{1,2}:\d{1,2}$/ ) {
    ( $BACKUP_HOUR, $BACKUP_MIN ) = split /:/, $BACKUP_TIME;
} else {
    $app->log($WARN, "Parameter \"Backup.Tape.Start\" not formatted pr
+operly [ HH:MM ].  Defaulting to 07:00");
    ( $BACKUP_HOUR, $BACKUP_MIN ) = ( 07, 00 );
}

my ($min, $hour, $mday, $month, $year ) = (localtime)[1,2,3,4,5];
my $time = timelocal(0,$BACKUP_MIN,$BACKUP_HOUR,$mday,$month,$year);

##Set time to yesterday if current time of day  < configured back-up t
+ime

$time -= ((60 * 60) * (24 * $SAVE_DAYS))
    if ( $hour < $BACKUP_HOUR || ( $hour == $BACKUP_HOUR && $min < $BA
+CKUP_MIN ));

if ( $mtime < $time ){
print "$_\n";
}

#unlink $_ if ( $mtime < $time );
}
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