I have following script but its not working as expected. Any clue???

    #############################################
    #!/usr/local/bin/perl
    
    # Use either -h or -k flag or leave it blank for default (-k)
    # -h for human-readable size output
    # -k for 1k-block output
    $flag = "-h";
    @df = `df $flag`;
    
    print "Content-type: text/htmln\n";
    print "<table border=2>\n";
    print "<tr>\n";
    
    print "<td><b>Filesystem</b></td>\n";
    
    if ($flag eq "-h") {
        print "<td><b>Size</b></td>\n";
    }
    else {
        print "<td><b>1k-blocks</b></td>\n";
    }
    
    print "<td><b>Used</b></td>\n";
    print "<td><b>Avail</b></td>\n";
    print "<td><b>Capacity</b></td>\n";
    print "<td><b>Mounted on</b></td>\n";
    print "</tr>\n";
    
    foreach $line (@df) {
        next if ($line =~ /Filesystem/);
    
        ($fsystem,$blocks,$used,$avail,$capacity,$mounted) = split(/s+
+/,$line);
        
        print "fsystem is $fsystem\n";
        print "blocks is $blocks\n";
        print "used is $used\n";
        print "avail is $avail\n";
        print "capacity is $capacity\n";
        print "mounted is $mounted\n";
    
    ($number,$sign) = split(/%/,$capacity);
    if ($number < 60) {
        print "<tr bgcolor=green>\n";
    }
    elsif (($number >= 60) && ($number < 90)) {
        print "<tr bgcolor=yellow>\n";
    }
    else {
        print "<tr bgcolor=red>\n";
    }
    #
    print "<td>$fsystem</td>\n";
    print "<td>$blocks</td>\n";
    print "<td>$used</td>\n";
    print "<td>$avail</td>\n";
    print "<td>$capacity</td>\n";
    print "<td>$mounted</td>\n";
    print "</tr>\n";
    }
    
    print "</table>\n";
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