User is not in the sudoers file.The incident will be reported
56561
How do I add myself into the sudoers group?
122621
Allowing a user to use sudo without a password
4933
Privileges link AWOL?
60734
More descriptive "User was removed" explanation
86402
systemctl --user not available for www-data user
152966
How do I debug permissions?
126556
Parse error in sudoers file
15255
How can I add a new user as sudoer using the command line?
75118
admin no longer has access to shared folder
140231
How to get back sudo on Ubuntu?
10422
How do I use sudo to redirect output to a location I don't have permission to write to?
111046
sudo: /var/lib/sudo/navneet writable by non-owner (040777), should be mode 0700
46726
Does user have to logoff then back on if I change /etc/sudoers?
74011
allow sudo to another user without password
153070
INACTIVE_OWNER_OR_USER
110172
What do I do if I believe a user to be operating a sock puppet account?
49646
How to Protect Uploads, if User is not Logged In?