Showing where errors regarding “x user is not in the sudoers file. This incident will be reported.” end up. It’s related to authentication errors which can be found in /var/log/auth.log or with journalctl for Systemd based Linux systems. Commands Used: cat /var/log/auth.log cat /var/log/auth.log | grep NOT grep NOT /var/log/auth.log journalctl which sudo journalctl $(which sudo) journalctl -b $(which sudo) journalctl -p 3 $(which sudo) Wallpaper: https://www.pling.com/p/1583257 Like my channel? Please help support it: Paypal: https://www.paypal.me/quidsup Follow me on Social Media Twitter: https://twitter.com/quidsup MeWe: https://mewe.com/i/quidsup Minds: https://minds.com/quidsup #Linux #Sudo #QuidsupLinux