binwalk:tldr:5257c

The command "binwalk --entropy --save ${path-to-binary}" is using the binwalk tool to analyze the entropy of a binary file.

• "binwalk" is a popular command-line tool used for analyzing and extracting various types of binary files.
• "--entropy" is an option flag that tells binwalk to calculate and display the entropy of the specified binary file.
• "--save" is another option flag that tells binwalk to save the calculated entropy values to a file instead of displaying them on the terminal.
• "${path-to-binary}" refers to the path of the binary file that you want to analyze and for which you want to calculate entropy.

Entropy is a statistical measure of randomness or chaos within a set of data. In the context of binary files, entropy can provide insights into the level of compression, encryption, or obfuscation applied to the file. High entropy generally indicates a higher degree of randomness, while low entropy suggests patterns or regularity within the data.

By using the provided command, binwalk will calculate the entropy of the specified binary file and save the results to a file instead of displaying them on the terminal.