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Full Discussion: Perl script: matching multiple lines error
Top Forums Shell Programming and Scripting Perl script: matching multiple lines error Post 302844318 by askari on Sunday 18th of August 2013 12:53:20 PM
Old 08-18-2013
Perl script: matching multiple lines error
Dear Perl users,

Could somebody help me how to fix my code so I can get my desired output.
Here is the data:
Code:
Pattern Gabriel
halo1
halo2
end
Pattern Andreas
halo1
halo2
end

I want to grep multiple lines between the pattern /Pattern Gabriel / and /end/.
Then I will store the output into two files (let's say Gabriel.log and Andres.log based on the name).

Code:
The Gabriel.log contains:

Code:
Pattern Gabriel
halo1
halo2
end



Code:
The Andreas.log contains:

Code:
Pattern Andreas
halo1
halo2
end

I saw there is a similar solution that I found but the desired output isn't valid yet.
here is my code so far:

Code:
#!/usr/bin/perl -w
use strict;

my @result;
my $flag = 0;
my @data = qw /Gabriel Andreas/;

while (my $line = shift @data)
{
  if (open (EXT, ">${line}.log"))
  {

  if (open (FILE, "<data_test.log"))
  {
  
  while (<FILE>) 
    {
      
      if (/Pattern\s+($line)/i) 
      {
       $flag = 1;
      } 
      elsif( /^end/ ) 
      {
       $flag = 0;
      }
      if ($flag) 
      {
        push @result, $_;
      }
    }

  print EXT "$_" for (@result);

  }
  }
}  
close (EXT);
close (FILE);

 

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bup-margin

bup-margin(1)						      General Commands Manual						     bup-margin(1)

NAME

       bup-margin - figure out your deduplication safety margin

SYNOPSIS

       bup margin [options...]

DESCRIPTION

       bup margin  iterates  through  all  objects  in	your  bup repository, calculating the largest number of prefix bits shared between any two
       entries.  This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.

       For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45.  That  means  a  46-bit
       hash  would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
       its first 46 bits.

       The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects.  Since SHA-1 hashes have 160 bits,
       that  leaves 115 bits of margin.  Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
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       If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see	if
       you're getting dangerously close to 160 bits.

OPTIONS

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	      Guess  the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
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	      don't use .midx files, use only .idx files.  This is only really useful when used with --predict.

EXAMPLE

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	      Reading indexes: 100.00% (1612581/1612581), done.
	      40
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SEE ALSO

       bup-midx(1), bup-save(1)

BUP

       Part of the bup(1) suite.

AUTHORS

       Avery Pennarun <apenwarr@gmail.com>.

Bup unknown-															     bup-margin(1)
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