decode hex

--- title: decode hex categories: | formats version: 0.104.0 formats: | Hex decode a value. usage: | Hex decode a value. editLink: false contributors: false ---  # `decode hex` for [formats](/commands/categories/formats.md) <div class='command-title'>Hex decode a value.</div> ## Signature ```> decode hex {flags} ``` ## Input/output types: | input | output | | ------ | ------ | | string | binary | ## Examples Decode arbitrary binary data ```nu > "09FD" | decode hex Length: 2 (0x2) bytes | printable whitespace ascii_other non_ascii 00000000: 09 fd _× ``` Lowercase Hex is also accepted ```nu > "09fd" | decode hex Length: 2 (0x2) bytes | printable whitespace ascii_other non_ascii 00000000: 09 fd _× ```

The `decode hex` command, belonging to the 'formats' category in Nushell, is used to decode a hexadecimal string into its corresponding binary representation. This command accepts a string as input, which represents the hexadecimal encoded data, and outputs the decoded binary data. The input string can contain either uppercase or lowercase hexadecimal characters (0-9, A-F, a-f). The command processes the input string, converting each pair of hexadecimal characters into its equivalent byte value. The resulting bytes are then assembled into a binary data structure, which is the output of the command. This is useful for converting data from a human-readable hexadecimal format into a binary format that can be used by other commands or applications. An example demonstrates how the hexadecimal string '09FD' is decoded into binary data, resulting in a two-byte output. Lowercase hex like '09fd' also works.