Answer:
a rootkit is a program that takes advantage of very low-level operating system functions
Explanation:
On windows, it is the type command.
On linux, the cat command outputs the file.
All bytes that represent printable characters will be displayed as ASCII or even Unicode.
The standard program that uses common views such as the icon view, list view, and details view would be the program known as "File Explorer" (Windows) or "Finder" (Mac). This program uses all the views to make selecting and tracking down certain files a much more painless and easier process to complete.
Hope this helps and good luck! :)