crunch:tldr:38010

The command "crunch ${8} ${8} ${0123456789abcdef}" is written in a shell or command line interface and it uses the tool called "crunch".

Here is an explanation of each part of the command:

• "crunch" is a tool used to generate custom wordlists or password dictionaries. It creates a list of all possible combinations or permutations of characters based on the specified parameters.
• "${8}" indicates that the generated words should have a length of 8 characters. The number inside the curly braces represents the desired length of the words.
• "${8}" (repeated) specifies that the minimum and maximum length of the generated words should also be 8 characters. In this case, the minimum and maximum length are the same.
• "${0123456789abcdef}" represents the character set used to generate the words. It includes the numbers from 0 to 9 and the lowercase letters from a to f. The characters inside the curly braces form the set of characters that will be used to generate the combinations.

In summary, this command instructs the "crunch" tool to generate all possible combinations of 8-character words using the characters from 0 to 9 and the lowercase letters from a to f.