The job started at Fri Oct 11 07:01:10 BST 2013
log4j:WARN No appenders could be found for logger 
log4j:WARN Please initialize the log4j system properly.
Error checking credentials
The job completed at Fri Oct 11 08:01:10 BST 2013

##</code><code>##

use strict;
use warnings;

my $joblog = "/usr/logs/app.log";
my $M1 = "The job completed successfully";
my $M2 = "The job failed to start";
my $M3 = "The job failed to complete";
my $M4 = "The log does not exist";
my @tm = localtime;
my ($started,$completed);
chomp(my $jobdate=`date +"%a %b %d"`);
my @output;

   if (($tm[2] == 9) && ($tm[1] == 00))
   {
      if (-e $joblog)
      {
          local $/;
          open(my $fh, '<', $joblog);
          my @content = <$fh>;
          for(@content)
          {
              next unless (/^The job/);

              if (m/^The job started at $jobdate/){
                  $started = 1;}

              push (@output,"$M2") if ! $started;
              print @output and exit if ! $started;

              if (/^The job ended at $jobdate/){
                   $completed = 1;
                   push (@output,"$M1");
                   print @output and exit if $started;}
          }

          @output="$M3" if ! $completed;
          print @output and exit if ! $completed;
      }
      else{print "$M4";}
    }
    else {
         print @output if defined;}