====== sudo com lecture file ======

  sudo visudo
  
  #add ao arquivo
  Defaults       lecture=always
  Defaults       lecture_file=/etc/sudo_lecture.txt
  
Clique no link para fazer o download do arquivo e evitar a perda de caracteres.

<file php groot.txt>

       \^V//
       |. .|    I AM (G)ROOT!
     - \ - / _
      \_| |_/
        \ \
      __/_/__
     |_______|   With great power comes great responsibility.
      \     /    Use sudo wisely.
       \___/


</file>

Criar o arquivo: ''/etc/sudo_lecture.txt''

  sudo cp groot.txt /etc/sudo_lecture.txt


Testando:
  
  sudo -k
  sudo -i

Fonte:
  * https://www.cyberciti.biz/open-source/command-line-hacks/adding-spice-to-your-sudo-session-with-a-lecture-file-on-linux-or-unix/