Hello haukex,

Thanks for correcting my assumption(s). The AM showed some code that possibly is an older version. I was under the impression that an older version was using internal implemented methods (pack and unpack). From the latest documentation on perldoc/IPC::SharedMem/SYNOPSIS is shown as an example:

$shm->write(pack("S", 4711), 2, 2);
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I assumed that pack from the example above is the core pack. I also checked the source code from CPAN Source and I was unable to find the pack and unpack methods until I saw:

sub stat
{
  my $self = shift;
  my $data = '';
  shmctl $self->id, IPC_STAT, $data or return undef;
  IPC::SharedMem::stat->new->unpack($data);
}
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Thanks again for clearing things out. BR / Thanos.