1. Binwalk - A tool for searching binary files for embedded hidden files and data.
   1. binwalk $file # Displays the embedded data
   2. binwalk -e file # Extracts the data
   3. binwalk --dd ".*" $file # Extracts all data
2. strings
   1. strings $file
   2. strings -n 6 $file # Extracts strings with a minimum length of 6
3. file
   1. file $file
4. exiftool
   1. exiftool $file