hex dump

Raw bytes printed as two-digit hexadecimal numbers, usually 16 to a line with the offset on the left.

A hex dump lists a buffer's bytes as hexadecimal pairs, typically 16 per row prefixed by the offset of the row's first byte, so any byte can be found by position.

Examples

The 18-byte JSON {"t":21.5,"rh":64} dumps as 7b 22 74 22 3a 32 31 2e ..., with the offset 00000000 on the left and the text on the right.
In the dump, the byte at offset 0x10 is 34, the digit 4, on the second line because the first line holds 16 bytes.