Can't edit file in /tmp with 777 permissions even when root; Can delete;
66674
User root can't write to file in /tmp owned by someone else in 20.04, but can in 18.04
1291
I added a user to a group, but group permissions on files still have no effect
57713
How to copy files into /usr/local/? (permission denied)
33811
How to fix "Could not open lock file" because "Permission denied"?
54210
Change files with Editor that need sudo permissions
158692
How do I edit a file as root?
150602
Can't delete folder and I am admin. "You need permission to perform this action. You require permission from..."
102116
How Should I Correct the Owners and Permissions in an OS X User Folder?
52186
What are the recommended directory permissions?
48320
How to recursively remove execute permissions from files without touching folders?
120171
How to reset folder permissions to their default in Ubuntu?
100263
Root directory '/' locked after using chmod
117975
ALTER DEFAULT PRIVILEGES - permission denied
36960
Why does chmod 777 -R / leave the system unusable?
24430
Delete/repair files with weird permissions/owner/group
128041
Cannot remove file from trash that was put there as root
113670
How is the /tmp directory cleaned up?