How do I write information to a file that is currently opened? Please see below for a clearer explanation on what I mean. I have this script below that basically write some information to a log file.

#!/usr/bin/perl

use warnings;
use strict;

$|++;
my $main_log = '/tmp/main_log.txt';
my $sub_log  = '/tmp/sub_log.txt';

print "Start: Coming from the script.\n";

open( my $main_log_file, '>>', $main_log )
  or die( "Error: Cannot open $main_log" );

print $main_log_file "Coming from re-opening "
  . "the opened log file.\n\n";

open( my $sub_log_file, '<', $sub_log )
  or die( "Error: Cannot open $sub_log" );
print $main_log_file $_ while( <$sub_log_file> );
close( $sub_log_file );

close( $main_log_file );

<>;      # This will just pause the script.

print "End: Coming from the script.\n";
[download]

When I execute it like this (note that the name of the log file is the same as log file in the script),

#$ perl test.pl > /tmp/main_log.txt
[download]

Since I added the '<>;' statement, it will pause the script before it completely ends. Here the log file before the '<>;' statement. So, the additional information is being written to the log file.

Start: Coming from the script.
Coming from re-opening the opened log file.

Coming from sub-log file.
[download]

And here's the output after the '<>;' statement. The 'additional information' becomes

Start: Coming from the script.
End: Coming from the script.
ened log file.

Coming from sub-log file.
[download]

So, the output that I want is something like this.

Start: Coming from the script.
Coming from re-opening the opened log file.

Coming from sub-log file.
End: Coming from the script.
[download]

So, is there a workaround on what I am trying to do?

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