# xxd > Create a hexadecimal representation (hexdump) from a binary file, or vice-versa. > More information: . - 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|-autoskip]}} {{input_file}}` - Display the output with 10 columns of one octet (byte) each: `xxd {{[-c|-cols]}} {{10}} {{input_file}}` - Display output only up to a length of 32 bytes: `xxd {{[-l|-len]}} {{32}} {{input_file}}` - Display the output in plain mode, without any gaps between the columns: `xxd {{[-p|-postscript]}} {{input_file}}` - Revert a plaintext hexdump back into binary, and save it as a binary file: `xxd {{[-r|-revert]}} {{[-p|-postscript]}} {{input_file}} {{output_file}}`