Help for this page
printf '%08x', unpack 'N', $Vpacked printf '%08x', unpack 'N', $Npacked ... 01020304 01020304 04030201
$num = 0x01020304; ... 10000000 01000000 11000000 00100000 00000001 00000010 00000011 00000100 00000100 00000011 00000010 00000001