How do I overcome "Operation not permitted" when attempting to edit a file as root (admin)?
40788
How do I disable System Integrity Protection (SIP) AKA "rootless" on macOs [OS X]
54482
Why is there no option to login as root?
4849
Permission denied to change gid(group) of a file I own
51961
How do I make my folders inaccessible by other administrator accounts on Windows 8?
22847
Access denied to a folder after removing administrator permission
45541
How to fix sudo after "chmod -R 777 /usr/bin"?
77293
How can I reset permissions on (sub)folders under Windows Vista?
41285
How to properly edit system files (as root) in GUI (and CLI) in Gnu/Linux?
129130
How to NOT become a root user? Are administrators root?
48320
How to recursively remove execute permissions from files without touching folders?
155625
Why can't I change the permissions of files I have access to?
26770
How to append to a file as sudo?
59633
How do I edit a file in /proc that can be viewed with cat, but is not editable by mousepad and abiword?
24430
Delete/repair files with weird permissions/owner/group
108911
How can I get root-like permissions so I can download stuff from the software center?
60463
Editing sudoers file to restrict a user's commands
106046
How do I programmatically change file permissions?