bytes-circle is a tool that lets you analyze files.

text files are shown as a green centered crown, compressed and encrypted files should be shown as equally distributed variations with a very low CV (sigma/mean), and other types of files can be classified between these two categories depending on their ASCII vs binary content, which can be useful to quickly determine how information is stored inside them (redis db, mmedia files, etc).

The first two images are the same file but one as been modified where the last image is an encrypted file.

Now consider the tools you can use to analyze your Linux system,

for this exercise I propose Tiger

The Linux scripts incorporate specific checks targeting the Debian OS including: md5sums checks of installed files, location of files not belonging to packages, and analysis of local listening processes.