"P.D: Why when deleting software in GNU/Linux, and then you reinstall it, it
seems like if nothing would have happened? I mean, there is no way to delete
data, like in Android or Wincrap."
Applications often create configuration files or folders where they store
preferences, etc. Those files are usually hidden files in your home folder or
in your_home/.config/
For example firefox based browsers create a /home/user/.mozilla folder; gedit
preferences are in /home/user/.config/gedit, etc.
That's why if you reinstall an application its preferences remain unless you
remove the configuration files.
