Fix permissions of the `/usr` directory
3760
What if I accidentally run command "chmod -R" on system directories (/, /etc, ...)
57396
Folder permissions, red x on user object
150893
Getting warning file permission with root user
100263
Root directory '/' locked after using chmod
89489
How to restore default group/user ownership of all files under /var?
33279
How do I set up a folder so that anything created in it inherits permissions?
54210
Change files with Editor that need sudo permissions
110491
default permissions for /var/www
82519
How can I list permissions of every component in a file path?
48320
How to recursively remove execute permissions from files without touching folders?
135133
File permissions in /var/www not changing
24430
Delete/repair files with weird permissions/owner/group
114113
Cannot access a directory with permissions drw-rw-r--
73485
Unix: Is there a way to "copy" file or directory permissions?
141712
Fixing /etc/sudoers file
8906
What is /usr/bin/[ and how do I use it?
7135
Why does the group need --x permission on the parent directory?