Perl Monks,

I have a script that looks for process ids running on a system, so I take the output from ps on Red Hat Linux (or tasklist on Windows), and store those values in an array. The odd thing is that I am always missing the last digit of the process id (on Windows and Linux). I have written the regex two different ways, but achieve the same result. Can you see what I am doing wrong?

Method 1

sub getPids{
   my ($processName,$owner) = @_;
   my $ps;
   my $pid;
   my $command = "/bin/ps auwwwx | grep $processName | grep -v grep | 
+grep -v 'sh -c' ";
 
   $ps = `$command`;
 
 # print $ps;
 
   my @lines = split( "\n",$ps);
 
 # print @lines;
 
   foreach my $line (@lines){
 #   print $line . "\n";
     if ($line =~ qr|$owner\s+(\d*)\w+\s+\d+.+processName=$processName
+|){
       $pid = $line =~ qr|$owner\s+(\d*)\w+\s+\d+.+processName=$proces
+sName|;
       say "Found $processName in getPids() owned by $owner. PID is $1
+";
       #print "$1\n";
     }else{
       say "Loser";
     }
   }
}

[download]

Method 2

 if ($line =~ qr|$owner\s+(\w+)\w+\s+\d+.+processName=$processName|){
  $pid = $line =~ qr|$owner\s+(\w+)\w+\s+\d+.+processName=$processName
+|;
  say "Found $processName in getPids() owned by $owner. PID is $1";
  #print "$1\n";
}else{
  say "Loser";
}

[download]

In reply to Regex and PID issue by JonesyJones

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