Re^4: to copy certain content in file & repeat it .

i m rewriting the current code here i m printing the give n part but i want it in between.

use warnings;
use strict;
 my $fg=0;
my $i=0;
open(FF ,"lib");
open (FF1,>lib1");

while(<FF>)
{
  my  $lin =$_;
  print FF1 $lin;
   if ($lin=~m/pattern to be patched for stat copying/)
  {   $fg=1;
   }
   if ($fg)
{  

   $lin=$_;

  my  @arr =$lin[$i];
     $i++;
 }
if($lin=~m/pattern where to stop copying & repeating/)
{ $fg=0;
}

}
  if ($fg==0)

{
  for (my $j=0;$j<$i;$j++)

{
   print FF1 @arr[$j];
}
}
[download]

i want to actuaaly print the given para in between here using these script i am print @ end of file.

Comment on Re^4: to copy certain content in file & repeat it . Download Code

Replies are listed 'Best First'.
Re^5: to copy certain content in file & repeat it . by Anonymous Monk on Jul 01, 2011 at 10:02 UTC
Congratulations, you're getting closer :) Your `if` logic is clear now, and correct, you're almost finished But, your code once again does not compile, and has not been tidied, and you're still not push-ing onto the array You attempt to compensate by using an index, but you're using it on the wrong variable strict tells you about this Global symbol "@lin" requires explicit package name Global symbol "@arr" requires explicit package name There is no @lin array, and @arr does not exist outside of the if block, where you assign to it, instead of pushing You need to increase the scope of @arr, by declaring it outside the while loop, the same as you did $fg You need to push $lin onto @arr Unsure of what i'm talking about? You should read the basic datatypes, three, Arrays: A Tutorial/Reference, Lexical scoping like a fox Tutorials Getting Started with Perl Data Types and Variables the basic datatypes, three Data Type: Array Arrays: A Tutorial/Reference Getting Deeper Into Perl Variables and Scoping Variable Scoping in Perl: the basics Lexical scoping like a fox	[reply] [d/l]
Re^6: to copy certain content in file & repeat it . by harshmane (Initiate) on Jul 01, 2011 at 10:55 UTC
i am not using push because my file is very huge around 400 lines so i dont want to run out of mem and also i am not using any module .. so if you can write the certain part where i am making mistake.	[reply]
Re^7: to copy certain content in file & repeat it . by Anonymous Monk on Jul 01, 2011 at 11:20 UTC
i am not using push because my file is very huge around 400 lines so i dont want to run out of mem If you're concerned about memory, why did you chose the approach of building an array? If you want your program to work , given the approach you've chosen, you have to put data in the array, otherwise there is no data to print later (at which point you can empty the array). and also i am not using any module .. How is that relevant? so if you can write the certain part where i am making mistake No thanks. I explained in sufficient detail how you should make the changes. If I make the changes for you, you learn nothing. I'm attempting to teach you to fish (Give a fish or teach to fish?), if you're willing.	[reply]