hex
Unsigned hexadecimal constant in C?
The number itself is always interpreted as a non-negative number. Hexadecimal constants don’t have a sign or any inherent way to express a negative number. The type of the constant is the first one of these which can represent their value: int unsigned int long int unsigned long int long long int unsigned long long … Read more
binary sed replacement
bbe is a “sed for binary files”, and should work more efficiently for large binary files than hexdumping/reconstructing. An example of its use: $ bbe -e ‘s/original/replaced/’ infile > outfile Further information on the man page.
bash ascii to hex
$ str=”hello” $ hex=”$(printf ‘%s’ “$str” | xxd -p -u)” $ echo “$hex” 68656C6C6F Or: $ hex=”$(printf ‘%s’ “$str” | hexdump -ve ‘/1 “%02X”‘)” $ echo “$hex” 68656C6C6F Careful with the ‘”%X”‘; it has both single quotes and double quotes.
Convert File to HEX String Python
import binascii filename=”test.dat” with open(filename, ‘rb’) as f: content = f.read() print(binascii.hexlify(content))
What english words can be created using hexadecimal? [closed]
Java CAFEBABE, COFEEBABE or DEADBEEF for instance. You might like to check HexWords or Ned Batchelder Hex Words for a lot more examples.
Python 3 string to hex
The hex codec has been chucked in 3.x. Use binascii instead: >>> binascii.hexlify(b’hello’) b’68656c6c6f’
Java: convert a byte array to a hex string?
From the discussion here, and especially this answer, this is the function I currently use: private static final char[] HEX_ARRAY = “0123456789ABCDEF”.toCharArray(); public static String bytesToHex(byte[] bytes) { char[] hexChars = new char[bytes.length * 2]; for (int j = 0; j < bytes.length; j++) { int v = bytes[j] & 0xFF; hexChars[j * 2] = … Read more
How to convert 3-digit HTML hex colors to 6-digit flex hex colors
The three digit hex colors are expanded by doubling each digit (see w3 spec). So #F3A gets expanded to #FF33AA.
How to convert hex string into a bytes array, and a bytes array in the hex string?
Convert a hex string to a byte array and vice versa note: implementation from crypto-js, though now out of date and slightly altered // Convert a hex string to a byte array function hexToBytes(hex) { let bytes = []; for (let c = 0; c < hex.length; c += 2) bytes.push(parseInt(hex.substr(c, 2), 16)); return bytes; … Read more