> For the complete documentation index, see [llms.txt](https://johnermac.gitbook.io/johnermac/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://johnermac.gitbook.io/johnermac/post-exploitation/data-exfiltration/icmp/xxd.md).
# XXD
its used for converting binary data into a hex representation and vice versa. The xxd tool is primarily used for examining binary files, creating binary patches, and manipulating binary data.
### Basic Usage
Hexadecimal to binary conversion:
```css
xxd -r hexdump.txt binary_output.bin
```
Binary to hexadecimal conversion:
```css
xxd binary_input.bin hexdump.txt
```
Specifying input and output formats:
```css
xxd -g 4 binary_input.bin hexdump.txt
```
Skipping a specific number of bytes:
```css
xxd -s 16 binary_input.bin hexdump.txt
```
Limiting the number of bytes to display:
```python
xxd -l 64 binary_input.bin hexdump.txt
```
*XXD provides several other options for controlling the format and output, such as:*
* *`-c` (or `--cols`) to specify the number of bytes per line*
* *`-e` (or `--endian`) to set the endianness*
* *`-v` (or `--version`) to display the version information*
## How to extract files using XXD
