Shell Programming and Scripting

#!/usr/bin/perl -w
    use strict;
    use Spreadsheet::ParseExcel;
    my $parser   = Spreadsheet::ParseExcel->new();
    my $workbook = $parser->parse('OSChecks.xls');
    #my $worksheet = $workbook->worksheet('OperatingSystem');
    #my $worksheet = $workbook->worksheet(0);
    if ( !defined $workbook ) {
        die $parser->error(), ".\n";
    }

    for my $worksheet ( $workbook->worksheets() ) {
     
        my $row_min=$_[5];
        my $row_max=$_[10];
        my $col_min=$_[2];
        my $col_max=$_[5];
        my $col=$_[2];
        my $row=$_[5];
        my $worksheet = $workbook->worksheet('Stand-alone_LAB_Requirements');
      
         my ( $row_min, $row_max ) = $worksheet->row_range();
         my ( $col_min, $col_max ) = $worksheet->col_range();
        for my $row ( $row_min .. $row_max ) {
            for my $col ( $col_min .. $col_max ) {
                my $cell = $worksheet->get_cell( $row, $col );
                next unless $cell;
                print "Row, Col    = ($row, $col)\n";
                print "Value       = ", $cell->value(),       "\n";
                print "\n";
            }
        }
    }