Perl examples Trying pack("cccc",65,66,67,68): 'ABCD' (hex ) Trying pack("c4",65,66,67,68): 'ABCD' (hex ) Trying pack("s2",1,2): '' (hex ) Trying pack("N2",1,2): '' (hex ) Trying pack("a4", "abcd"): 'abcd' (hex ) Trying pack("aaaa", "abcd", "x", "y", "z"): 'axyz' (hex ) Trying pack("a14", "abcdefg"): 'abcdefg' (hex ) Trying pack("a4@8", "hi"): 'hi' (hex ) Trying pack("a6X2c", "hi", 255): 'hiÿ' (hex )