steghide:tldr:9caf2

This command is using the tool "steghide" to embed a hidden file within an image file. Here is a breakdown of each part of the command:

• "steghide" is the name of the program or tool that is being executed.
• "embed" is one of the functions or operations performed by steghide. It tells the tool that we want to embed a file.
• "--coverfile" is an option or flag that specifies the path to the image file (in JPEG format) which will be used as a cover or carrier for the hidden file.
• "${path-to-image-jpg}" is a placeholder that should be replaced with the actual path to the image file (e.g., /path/to/myimage.jpg).
• "--embedfile" is another option or flag that indicates the path to the file we want to hide within the image.
• "${path-to-data-txt}" is a placeholder that needs to be replaced with the actual path to the data file (e.g., /path/to/mydata.txt).
• "--compress" is an option that enables compression of the hidden data for better efficiency. In this case, it is set to a compression level of 9, which is the highest level of compression. You can adjust this value from 1 (lowest) to 9 (highest).
• The command as a whole combines these options and parameters to execute the steghide tool, embedding the specified data file within the specified image file.

It's important to note that the specific usage and available options may vary depending on the version and configuration of steghide you are using.