title: better way to modify sudoers file
body: <p>We used to run our application as a special user (say "suser") instead of root user. So we will give some permissions to this suser for running some commands without needing a password by adding this in the <code>/etc/sudoers</code> file.</p>
  
  <p>I believe changing this file will require a reboot or log off. Correct me if I am wrong.</p>
  
  <p>Which one is better changing directly /etc/sudoers file or adding a separate sudoers file in /etc/sudoers.d directory ? Is there any reason to avoid modifying /etc/sudoers file directly ?</p>
  
  <p>During uninstall of my application, is removing the user (suser) alone enough?</p>