Search notes:
Perl function: pack
pack
function converts values to a byte sequence containing representations according to a given specification.
use warnings;
use strict;
my $hex = '01' . '05' . '42' . 'f3';
my $string = pack('H*', $hex);
dump_string($string);
$string = "\x01\x05\x42\xf3";
dump_string($string);
my @shorts = (0, 1, 255, 256, 257, 258);
$string = pack('s6', @shorts);
dump_string($string);
sub dump_string {
my $string = shift;
# sort of emulate:
# print unpack('H*', $string); print "\n";
for my $byte (split //, $string) {
printf "%.2x ", ord($byte);
}
print "\n";
}