10.3. xxd - make a hexdump or do the reverse.
neo@MacBook-Pro ~/workspace % xxd -b netkiller.dat
00000000: 00000000 00000000 00000000 11111111 00000000 00000000 ......
00000006: 00000000 00000000 11111111 11111111 11111111 11111111 ......
neo@MacBook-Pro ~ % xxd -c 2 -b netkiller.bin
00000000: 10010110 01001000 .H
跳过两个字节，三列显示
neo@MacBook-Pro ~ % xxd -s 2 -c 3 -b netkiller.txt
00000002: 11101001 10011001 10001000 ...
00000005: 11100110 10011001 10101111 ...
00000008: 11100101 10110011 10110000 ...
