Accidently removed admin/sudo rights
3716
How do I add myself back as a sudo user?
12348
How Do I Opt Out of Privileges?
70235
What registry access can you get without Administrator privileges?
129130
How to NOT become a root user? Are administrators root?
125558
Why Changing Permissions For Some Systems Files is Not Allowed?
89489
How to restore default group/user ownership of all files under /var?
28759
Change folder permissions and ownership
44231
Remove sudo privileges from a user (without deleting the user)
41384
Some programs not found when used with sudo
33039
How to gain sudo access after powerwashing (factory resetting) my computer?
146461
Repair filesystem permission
60463
Editing sudoers file to restrict a user's commands
87514
Access denied even though I'm an Administrator?
106720
I can't access the root account anymore: user is not in the sudoers file
22847
Access denied to a folder after removing administrator permission
3760
What if I accidentally run command "chmod -R" on system directories (/, /etc, ...)
157144
How to sudo visudo without a password, remove all prompts for password