tldr/pages/common/xxd.md

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# xxd
> Create a hexadecimal representation (hexdump) from a binary file, or vice-versa.
- Generate a hexdump from a binary file and display the output:
`xxd {{input_file}}`
- Generate a hexdump from a binary file and save it as a text file:
`xxd {{input_file}} {{output_file}}`
- Display a more compact output, replacing consecutive zeros (if any) with a star:
`xxd -a {{input_file}}`
- Display the output with 10 columns of one octet (byte) each:
`xxd -c {{10}} {{input_file}}`
- Display output only up to a length of 32 bytes:
`xxd -l {{32}} {{input_file}}`
- Display the output in plain mode, without any gaps between the columns:
`xxd -p {{input_file}}`
- Revert a plaintext hexdump back into binary, and save it as a binary file:
`xxd -r -p {{input_file}} {{output_file}}`