Still clear as mud anonymous monk. Since you have already found Date::Manip you should mostly there. Is this what you are after?
#!/usr/bin/perl
use Date::Manip;
use Getopt::Long;
my ($from_text, $till_text);
GetOptions( from => \$from, till => \$till );
my $from_date = ParseDate($from_text);
unless ($from_date) {
die "Invalid From date\n";
}
my $till_date = ParseDate($till_text);
unless ($till_date) {
die "Invalid till date\n";
}
unless (Date_Cmp($from_date,$till_date) > 0) {
die "Horribly\n";
}
while(<>) {
... read the date ...
if (Date_Cmp($date,$from_date) >= 0 and
Date_Cmp($date,$till_date) < 0) {
... here we go ...
}
}
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