Uploaded November 2021 | Updated September 2026, 2 weeks ago

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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:
pling.com/p/1583257

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