A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
-bash/zsh: xxd command not found # Windows (WSL2) sudo apt-get update sudo apt-get install xxd # Debian apt-get install xxd # Ubuntu apt-get install xxd # Arch Linux pacman -S xxd # Kali Linux apt-get install xxd # CentOS yum install xxd # Fedora dnf install vim-common-2 # Raspbian apt-get install xxd # Dockerfile dockerfile.run/xxd
xxd 命令创建给定文件或标准输入的十六进制转储。 它还可以将十六进制转储转换回其原始二进制形式。 与 uuencode 和 uudecode 一样，它允许以 邮件安全 ASCII 表示形式传输二进制数据，但具有解码为标准输出的优点。
此外，xxd 命令还可用于执行二进制文件修补。
xxd -h[elp] xxd [options] [infile [outfile]] xxd -r[evert] [options] [infile [outfile]]
-a | -autoskip toggle autoskip: A single '*' replaces nul-lines. Default off. -b | -bits Switch to bits (binary digits) dump, rather than hexdump. This option writes octets as eight digits "1"s and "0"s instead of a normal hexadecimal dump. Each line is preceded by a line number in hexadecimal and followed by an ascii (or ebcdic) representation. The command line switches -r, -p, -i do not work with this mode. -c cols | -cols cols format <cols> octets per line. Default 16 (-i: 12, -ps: 30, -b: 6). Max 256. -E | -EBCDIC Change the character encoding in the righthand column from ASCII to EBCDIC. This does not change the hexadecimal representation. The option is meaningless in combinations with -r, -p or -i. -g bytes | -groupsize bytes separate the output of every <bytes> bytes (two hex characters or eight bit-digits each) by a whitespace. Specify -g 0 to suppress grouping. <Bytes> defaults to 2 in normal mode and 1 in bits mode. Grouping does not apply to postscript or include style. -h | -help print a summary of available commands and exit. No hex dumping is performed. -i | -include output in C include file style. A complete static array definition is written (named after the input file), unless xxd reads from stdin. -l len | -len len stop after writing <len> octets. -p | -ps | -postscript | -plain output in postscript continuous hexdump style. Also known as plain hexdump style. -r | -revert reverse operation: convert (or patch) hexdump into binary. If not writing to stdout, xxd writes into its output file without truncating it. Use the combination -r -p to read plain hexadecimal dumps without line number information and without a particular column layout. Additional Whitespace and line-breaks are allowed anywhere. -seek offset When used after -r: revert with <offset> added to file positions found in hexdump. -s [+][-]seek start at <seek> bytes abs. (or rel.) infile offset. + indicates that the seek is relative to the current stdin file position (meaningless when not reading from stdin). - indicates that the seek should be that many characters from the end of the input (or if combined with +: before the current stdin file position). Without -s option, xxd starts at the current file position. -u use upper case hex letters. Default is lower case. -v | -version show version string.
xxd 显示文件的十六进制形式：
$ xxd demon.c 0000000: 2369 6e63 6c75 6465 203c 7374 6469 6f2e #include.//this is mai 0000020: 6e20 6675 6e63 0a69 6e74 206d 6169 6e28 n func.int main( 0000030: 290a 7b0a 2020 2020 696e 7420 6e75 6d20 ).{. int num 0000040: 3d31 303b 0a20 2020 2070 7269 6e74 6628 =10;. printf( 0000050: 226e 756d 6265 7220 6973 2025 645c 6e22 "number is %d\n" 0000060: 2c6e 756d 293b 0a20 2020 2072 6574 7572 ,num);. retur 0000070: 6e20 303b 0a7d 0a0a n 0;.}..
xxd 命令使用 -b 二进制形式显示文件内容：
$ xxd -b demon.c
0000000: 00100011 01101001 01101110 01100011 01101100 01110101 #inclu
0000006: 01100100 01100101 00100000 00111100 01110011 01110100 de <st
000000c: 01100100 01101001 01101111 00101110 01101000 00111110 dio.h>
0000012: 00001010 00101111 00101111 01110100 01101000 01101001 .//thi
0000018: 01110011 00100000 01101001 01110011 00100000 01101101 s is m
000001e: 01100001 01101001 01101110 00100000 01100110 01110101 ain fu
0000024: 01101110 01100011 00001010 01101001 01101110 01110100 nc.int
000002a: 00100000 01101101 01100001 01101001 01101110 00101000 main(
0000030: 00101001 00001010 01111011 00001010 00100000 00100000 ).{.
0000036: 00100000 00100000 01101001 01101110 01110100 00100000 int
000003c: 01101110 01110101 01101101 00100000 00111101 00110001 num =1
0000042: 00110000 00111011 00001010 00100000 00100000 00100000 0;.
0000048: 00100000 01110000 01110010 01101001 01101110 01110100 print
000004e: 01100110 00101000 00100010 01101110 01110101 01101101 f("num
0000054: 01100010 01100101 01110010 00100000 01101001 01110011 ber is
000005a: 00100000 00100101 01100100 01011100 01101110 00100010 %d\n"
0000060: 00101100 01101110 01110101 01101101 00101001 00111011 ,num);
0000066: 00001010 00100000 00100000 00100000 00100000 01110010 . r
000006c: 01100101 01110100 01110101 01110010 01101110 00100000 eturn
0000072: 00110000 00111011 00001010 01111101 00001010 00001010 0;.}..
xxd 从二进制文件生成十六进制转储并显示输出：
xxd input_file
xxd 从二进制文件生成十六进制转储并将其保存为文本文件：
xxd input_file output_file
xxd 显示更紧凑的输出，用星号替换连续的零（如果有）：
xxd -a input_file
xxd 显示输出，共 10 列，每列 1 个八位组（字节）：
xxd -c 10 input_file
xxd 仅显示最大长度为 32 字节的输出：
xxd -l 32 input_file ------------------- # 使用 -l 参数，限定只显示 16 bytes 的内容 $ xxd -l 16 demon.c 0000000: 2369 6e63 6c75 6465 203c 7374 6469 6f2e #include <stdio.
xxd 以普通模式显示输出，列之间没有任何间隙：
xxd -p input_file
xxd 将纯文本十六进制转储恢复为二进制，并将其保存为二进制文件：
xxd -r -p input_file output_file