hexdump

问题 feel a bit stupid asking this (sounds as basics) but can't find an answer elsewhere. I want to convert binary data to hex, just that, no fancy formatting and all. hexdump seems too clever, it "overformats" for me. I want to take x bytes from the /dev/random and pass them on as hex. Preferably I'd like to use only standard linux tools, so that I don't need to install it on every machine (there are many) 回答1: Perhaps use xxd : % xxd -l 16 -p /dev/random 193f6c54814f0576bc27d51ab39081dc 回答2:

问题 I am working on disassembling a firmware (Siemens C165 processor - https://www.infineon.com/dgdl/Infineon-C165-DS-v02_00-en%5B8%5D.pdf?fileId=db3a304412b407950112b43a49a66fd7) in IDA. I have the firmware, so I can also read it via Python. I need to find a string being permutation of 0, 1, 2, 3, 4, 5, 6, 7 (0-7) Wrote this simple program: from itertools import permutations l = list(permutations(range(0,8))) print(len(l)) with open("firm.ori", 'rb') as f: s = f.read() for i in l: hexstr = '\\x'

问题 I am converting binary data into hex and viewing this hex data in head from a continuous stream. I run the following where the conversion is from here echo "ibase=2;obase=10000;$(echo `sed '1q;d' /Users/masi/Dropbox/123/r3.raw`)" \ \ | bc \ \ | head and I get (standard_in) 1: illegal character: H so wrong datatype. How can you do the conversion form binary to binary ascii by a single command efficietly? 回答1: I run the following code based on Wintermute's comment hexdump -e '/4 "%08x\n"' r3

问题 I have a special application (8051 simulator from ucsim) on a local server that transmits and expects non-printable characters on only one port. Essentially, I'm defining my own data format. Telnet would have been the perfect program if I can see the hex codes of each character returned back in 30 columns as well as being able to type hex codes of characters going out. Problem is, the telnet shipped with Linux only allows 1 row of hex characters and may alter behaviour when certain characters

问题 i wonder which hexdump() scapy uses, since i would like to modify it, but i simply cant find anything. what i DO find is: def hexdump(self, lfilter=None): for i in range(len(self.res)): p = self._elt2pkt(self.res[i]) if lfilter is not None and not lfilter(p): continue print "%s %s %s" % (conf.color_theme.id(i,"%04i"), p.sprintf("%.time%"), self._elt2sum(self.res[i])) hexdump(p) but that simply is an alternative for pkt.hexdump() , which does a pkt.summary() with a following hexdump(pkt) could

问题 I was wondering if there is a way to output the hexdump or raw data of a file to txt file. for example I have a file let's say "data.jpg" (the file type is irrelevant) how can I export the HEXdump (14ed 5602 etc) to a file "output.txt"? also how I can I specify the format of the output for example, Unicode or UTF? in C++ 回答1: This is pretty old -- if you want Unicode, you'll have to add that yourself. #include <stdio.h> #include <stdlib.h> int main(int argc, char **argv) { unsigned long

问题 It was really confusing to deal with hexdump command in linux. Basically I am trying to get the output from the /proc/device-tree. I tried to use the hexdump but ended up with confusion. My dts contains vvn = <0 0 2 2 0 0>; I got a proc node under /proc/device-tree. I tried the following command. hexdump -v -e '4/1 "%x" " "' vvn ; echo 0000 0000 0002 0002 0000 0000 hexdump -v -e '1/4 "%x" " "' vvn ; echo 0 0 2000000 2000000 0 0 hexdump -v -e '4/1 "%x "' vvn ; echo 0 0 0 00 0 0 00 0 0 20 0 0

问题 I had a question: I am writing a c program that functions much like a hex editor. I want to take in a file and view its hexadecimal values. For example, say I had the text file "helloworld.txt" that simply had the words "Hello World!" in it, I want to specify to the program to take that file, read its hexidecimal values (again the file is a simple .txt file and not a binary file) and store it in an array for later. Here is what I have so far: #include <stdio.h> #include <stdlib.h> int main()

问题 I am trying to understand more about binary files. So I wrote a pointer *data to print out the function in the binary. The problem is that I cannot find the hex value that I printed out to stdio in the hexdump file. #include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> /* Our old friend die from ex17. */ void die(const char *message){ if(errno){ perror(message); } else{ printf("ERROR: %s\n", message); } exit(1); } // a typedef creates a fake type, in this // case for a

问题 Is there any way I could save hexdump() to byte list so the list can be accessed by index. what I need is like this byte = hexdump(packet) for i in range(0, len(byte)): print %x byte[i] 回答1: The byte content of the packet may be accessed by invoking str(packet) , as follows: content = str(packet) # decoded hex string, such as '\xde\xad\xbe\xef' print content for byte in content: pass # do something with byte EDIT - This answer specifies how this can be converted to a byte array, for example: