hexdump가 설치안된 곳에서 hex값을 출력할때 유용함
od -t x1 /data/system/gesture.key
od syntax
Options
Note: all arguments to --long options are mandatory for -short options.
| -A RADIX, --address-radix=RADIX | decide how file offsets are printed |
| -j BYTES, --skip-bytes=BYTES | skip BYTES input bytes first |
| -N BYTES, --read-bytes=BYTES | limit dump to BYTES input bytes |
| -S BYTES, --strings[=BYTES] | output strings of at least BYTES graphic chars |
| -t TYPE, --format=TYPE | select output format or formats |
| -v, --output-duplicates | do not use * to mark line suppression |
| -w[BYTES], --width[=BYTES] | output BYTES bytes per output line |
| --traditional | accept arguments in traditional form |
| --help | display help and exit |
| --version | display version information and exit |
Format Specifications
| -a | same as -t a, select named characters, ignoring high-order bit |
| -b | same as -t o1, select octal bytes |
| -c | same as -t c, select ASCII characters or backslash escapes |
| -d | same as -t u2, select unsigned decimal 2-byte units |
| -f | same as -t fF, select floats |
| -i | same as -t dI, select decimal ints |
| -l | same as -t dL, select decimal longs |
| -o | same as -t o2, select octal 2-byte units |
| -s | same as -t d2, select decimal 2-byte units |
| -x | same as -t x2, select hexadecimal 2-byte units |
If first and second call formats both apply, the second format is assumed if the last operand begins with "+" or (if there are 2 operands) a digit. An OFFSET operand means -j OFFSET. LABEL is the pseudo-address at first byte printed, incremented when dump is progressing. For OFFSET and LABEL, a 0x or 0X prefix indicates hexadecimal; suffixesmay be "." for octal and b for multiply by 512.
TYPE is made up of one or more of these specifications:
| a | named character, ignoring high-order bit |
| c | ASCII character or backslash escape |
| d[SIZE] | signed decimal, SIZE bytes per integer |
| f[SIZE] | floating point, SIZE bytes per integer |
| o[SIZE] | octal, SIZE bytes per integer |
| u[SIZE] | unsigned decimal, SIZE bytes per integer |
| x[SIZE] | hexadecimal, SIZE bytes per integer |
SIZE is a number. For TYPE in d/o/u/x, SIZE may also be C for sizeof(char), S for sizeof(short), I for sizeof(int) or L for sizeof(long). If TYPE is f, SIZE may also be F for sizeof(float), D for sizeof(double) or L for sizeof(long double).
RADIX is d for decimal, o for octal, x for hexadecimal or n for none. BYTES is hexadecimal with 0x or 0X prefix, and may have a multiplier suffix: b 512, kB 1000, K1024, MB 1000*1000, M 1024*1024, GB 1000*1000*1000, G 1024*1024*1024, and so on for T, P, E, Z, Y. Adding a z suffix to any type displays printable characters at the end of each output line. Option --string without a number implies 3; option --width without a number implies 32. By default, od uses -A o -t oS -w16.