neo@netkiller ~ % echo "helloworld" | od -x
0000000      6568    6c6c    776f    726f    646c    000a                
0000013

neo@netkiller ~ % echo "helloworld" | od -x -An
             6568    6c6c    776f    726f    646c    000a  			
			
			

			
neo@netkiller ~ % od  -vN 32 -An -tx1 /dev/urandom | tr -d ' \n'
a6bf6dad8ed860a234046b66d550008f61c36e9cb2630c22d935dac5e20d7920