I have been trying to convert a binary file to hex representation, and then taking that hex representation and recreating the binary file. I have been able to read in a binary file as hex using the following code 
my $buffer;

open INFILE, "test.bin" or die "Can't open test.bin for reading: $!\n"
+;
open OUTFILE, ">test.bin" or die "Can't open test.bin for writing: $!\
+n";
select OUTFILE;

binmode INFILE;

while (read(INFILE, $buffer, 1) and printf("%X", ord($buffer))){};
print "\n";

[download]
But I am having trouble taking this hex representation and recreating the binary file with it. Here is the script I have currently that is not working 
my $buffer;

open INFILE, "test.text" or die "Can't open test.txt for reading: $!\n
+";
open OUTFILE, ">test_updated.bin" or die "Can't open test_updated.bin 
+for writing: $!\n";
binmode OUTFILE;

my $line = <INFILE>;
chomp $line;
my @list = split //, $line;
my $hex_value;
my $i =1;
foreach my $character (@list)
{
  if($i%2 == 0)
  {
    $hex_value .= $character;
    syswrite OUTFILE, hex($hex_value);
  }
  elsif($i%2 == 1)
  {
    $hex_value = "0x".$character;
  }
  $i++;
}

[download]
This code just write a bunch of number to the binary file which is not what I want. Anyone have any ideas on what I am doing wrong?

In reply to Recreating a binary file from hex representation by choedebeck

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