Shell Programming and Scripting

$ 
$ cat input.txt
This is a file containing employee info

START
name john
id 123
date 12/1/09
END

START
name sam
id 4234
date 12/1/08 resigned
END

Total records 2
Date of extraction: 12-3-09
$
$ perl -ne '{
>   if (/^START/) {$sts = "in"; chomp; $line = $line.$_."~"}
>   elsif (/^END/) {chomp; $line = $line.$_."~";
>     if ($line !~ /resigned/) {$line =~ s/~/\n/g; print $line}
>     $line = ""; $sts = "out"}
>   elsif ($sts eq "in") {chomp; $line = $line.$_."~"}
>   else {print}
> }' input.txt
This is a file containing employee info

START
name john
id 123
date 12/1/09
END


Total records 2
Date of extraction: 12-3-09
$
$

awk 'BEGIN{RS=""}!/resigned/{print $0"\n"}'