No write permissions on a file even with `sudo`
13246
How do I add a DNS server via resolv.conf?
72314
File permissions and saving
36582
How to run an application using sudo without a password?
92318
How to run sudo command with no password?
20211
Strange behaviour of 'sudo chmod -rwx': Does not remove group write permissions
6764
How do file permissions work?
37627
'Error: Read-only file system', even with root privileges in Bash shell
100762
Folder with ONLY write permission is useless... right?
66222
'sudo' not working after changing the permissions of '/usr' directory
127192
What are the different ways to set file permissions etc on gnu/linux
125491
Chmod to allow read and write permissions for directory
24735
How to set default file permissions for all folders/files in a directory?
148887
How to give permissions to read write but not delete the file
28322
Can't execute .out files, getting permission denied
10422
How do I use sudo to redirect output to a location I don't have permission to write to?
18906
Can a file be edited with the 'write' permission on it but not on its parent directory?
7317
how to: Please sudo, do _not_ setup any environment, especially $SUDO_USER?