Global symbol "$sec" requires explicit package name at - line 100.
Global symbol "$min" requires explicit package name at - line 100.
Global symbol "$hour" requires explicit package name at - line 100.
Global symbol "$mday" requires explicit package name at - line 100.
Global symbol "$mon" requires explicit package name at - line 100.
Global symbol "$year" requires explicit package name at - line 100.
Global symbol "$wday" requires explicit package name at - line 100.
Global symbol "$yday" requires explicit package name at - line 100.
Global symbol "$isdst" requires explicit package name at - line 100.
Global symbol "$year" requires explicit package name at - line 101.
Global symbol "$mon" requires explicit package name at - line 102.
Global symbol "$d" requires explicit package name at - line 103.
Global symbol "$mday" requires explicit package name at - line 103.
Global symbol "$d" requires explicit package name at - line 104.
Global symbol "$d" requires explicit package name at - line 105.
Global symbol "$d" requires explicit package name at - line 105.
Global symbol "$m" requires explicit package name at - line 107.
Global symbol "$mon" requires explicit package name at - line 107.
Global symbol "$m" requires explicit package name at - line 108.
Global symbol "$m" requires explicit package name at - line 109.
Global symbol "$m" requires explicit package name at - line 109.
Global symbol "$year" requires explicit package name at - line 111.
Global symbol "$m" requires explicit package name at - line 111.
Global symbol "$d" requires explicit package name at - line 111.
Global symbol "$sec" requires explicit package name at - line 114.
Global symbol "$min" requires explicit package name at - line 114.
Global symbol "$hour" requires explicit package name at - line 114.
Global symbol "$mday" requires explicit package name at - line 114.
Global symbol "$mon" requires explicit package name at - line 114.
Global symbol "$year" requires explicit package name at - line 114.
Global symbol "$wday" requires explicit package name at - line 114.
Global symbol "$yday" requires explicit package name at - line 114.
Global symbol "$isdst" requires explicit package name at - line 114.
Global symbol "$year" requires explicit package name at - line 115.
Global symbol "$mon" requires explicit package name at - line 116.
Global symbol "$d" requires explicit package name at - line 117.
Global symbol "$mday" requires explicit package name at - line 117.
Global symbol "$d" requires explicit package name at - line 118.
Global symbol "$d" requires explicit package name at - line 119.
Global symbol "$d" requires explicit package name at - line 119.
Global symbol "$m" requires explicit package name at - line 121.
Global symbol "$mon" requires explicit package name at - line 121.
Global symbol "$m" requires explicit package name at - line 122.
Global symbol "$m" requires explicit package name at - line 123.
Global symbol "$m" requires explicit package name at - line 123.
Global symbol "$year" requires explicit package name at - line 125.
Global symbol "$m" requires explicit package name at - line 125.
Global symbol "$d" requires explicit package name at - line 125.
Global symbol "$outfile" requires explicit package name at - line 127.
Global symbol "$outfile" requires explicit package name at - line 129.
Global symbol "$outfile" requires explicit package name at - line 129.
Global symbol "$filename" requires explicit package name at - line 131.
Global symbol "$index" requires explicit package name at - line 133.
Global symbol "$filename" requires explicit package name at - line 133.
Global symbol "$index" requires explicit package name at - line 134.
Global symbol "$filename" requires explicit package name at - line 137.
Global symbol "$filename" requires explicit package name at - line 138.
Global symbol "$sourcefile" requires explicit package name at - line 138.
Global symbol "$filename" requires explicit package name at - line 144.
Global symbol "$ct" requires explicit package name at - line 151.
Global symbol "$ct" requires explicit package name at - line 152.
Global symbol "$ct" requires explicit package name at - line 153.
Global symbol "$ct" requires explicit package name at - line 154.
Global symbol "$ct" requires explicit package name at - line 156.
Global symbol "$sourcefile" requires explicit package name at - line 158.
Global symbol "$ct" requires explicit package name at - line 170.
Global symbol "$ct" requires explicit package name at - line 171.
Global symbol "$ct" requires explicit package name at - line 171.
Execution of - aborted due to compilation errors.

##</code><code>##

Global symbol "$sourcefile" requires explicit package name at - line 158.

##</code><code>##

open(OLD,"/inside29/urchin/test/logfiles/$filename") || die ("Cud not open the $sourcefile");

##</code><code>##

open(OLD,"consolidatedlog.txt") || die ("C not open the $sourcefile");

##</code><code>##

my $yesterday = time() - ( 24 * 60 * 60 ); ## Why use 'my' here #################

## And not here -v-v-v-v-v-v-v-v- #####################
($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($yesterday);
$year += 1900;
$mon++;
$d = "$mday"; ## <<< Why copy $mday to $d? And why quote "$mday"?  #########################
if ($d <10) {
        $d = "0$d"; ## <<< What does this do? #################
}
$m ="$mon";
if ($m<10) {
        $m = "0$m"; ## <<< And this? ####################
}
$yesterday = "$year" . "$m" . "$d"; ## Why all those "s? #######