hexdump

 

 

 


Hexdump Usage

 

hexdump -C -n 128 wr740nv4_en_3_16_6_up_boot(130529).bin | less

opts

-C             #  hex+ASCII display

-n length

-s offset

output

00000000  01 00 00 00 54 50 2d 4c  49 4e 4b 20 54 65 63 68  |....TP-LINK Tech|
00000010  6e 6f 6c 6f 67 69 65 73  00 00 00 00 76 65 72 2e  |nologies....ver.|
00000020  20 31 2e 30 00 00 00 00  00 00 00 00 00 00 00 00  | 1.0............|
00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000040  07 40 00 04 00 00 00 01  00 00 00 00 3f df 17 e0  |.@..........?...|
00000050  dd 25 a9 6b e8 62 53 bc  19 05 5b b5 00 00 00 00  |.%.k.bS...[.....|
00000060  33 1d 49 c2 f8 8e 92 03  1f fc ac 70 30 73 1e 6b  |3.I........p0s.k|
00000070  00 00 00 00 80 00 20 00  80 1d 6c 50 00 3e 02 00  |...... ...lP.>..|
00000080  00 00 02 00 00 0d a3 18  00 10 00 00 00 2c 00 00  |.............,..|
00000090  00 00 00 00 00 00 c1 55  00 03 00 10 00 06 00 00  |.......U........|
000000a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000200  10 00 00 ff 00 00 00 00  10 00 00 fd 00 00 00 00  |................|
00000210  10 00 01 8e 00 00 00 00  10 00 01 8c 00 00 00 00  |................|
00000220  10 00 01 8a 00 00 00 00  10 00 01 88 00 00 00 00  |................|

Address

* 左手邊的是 address

echo -n 0123456789 > test.txt

hexdump -C test.txt

00000000  30 31 32 33 34 35 36 37  38 39                    |0123456789|
0000000a

當有 10 個字時, 下一行就 0000000a

* 每格 2^8 bit (0~255) = 1 byte

* 每行 16 bytes

 


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