#!/usr/bin/perl

use strict;

while(<DATA>){
 if (m/^Script.+\sat\s(.+)\s(.+)$/){
  my $date = $1;
  my $time = $2;
  print "$date\t$time\n";
  }
 }

__DATA__
Script /opt/OV/bin/OpC/agtinstall/inst.sh invoked by root at 02/25/11 14:36:48
blah
blah
blah
Script /opt/OV/bin/OpC/agtinstall/inst.sh invoked by root at 02/25/11 14:36:48
blah
blah
blah