Hi Monks, I am kinda of a perl fumbler. I am stuck with a problem for more than an hour now, wish somebody cud give me pointers.

File1 :
a

File2 :
a|12
a[11]|1
a[11][11]|0
b|2
c|0

I want to pick only the variables from File2 that are in File1.

Output should hence be File3:
a|12
a[11]|1
a[11][11]|0

<my Script :
Note: %results has 'a' as a key> 
open FILE2, "$f2" or die "Could not open file: $! \n"; //Corrected >$f
+2
foreach my $var (keys %results) 
{ 
  while( my $attr_line=<FILE2>)
  {
    if($attr_line =~ m/(.*?)\[/ ) 
    { 
      if (exists $results{$1}) 
        {
             print $attr_line;
        } 
    }
  }
}

[download]

but my Output is
a|12

I even tried this and I see no output for this though( logical more sensible than the prev scrpt? 

open FILE2, "$f2" or die "Could not open file: $! \n";
foreach my $var (keys %results) 
 { 
  while( my $attr_line=<FILE2>)
   {
     if($attr_line =~ /^\$var/ )
     { 
       print $attr_line;
       <strike>print $var."\n"; </strike>
     }
   }
 }
 
close(FILE2);

[download]

I understand the output is so because 'if exists' statement is true only for a|12. How do I make sure other any 'a*' be printed out too?

Thanks in advance, HJ

In reply to Parsing for [] in a file by HJ

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