How to fix sudo chown -R :NewGroup /usr?
3760
What if I accidentally run command "chmod -R" on system directories (/, /etc, ...)
36644
Why are PATH variables different when running via sudo and su?
1291
I added a user to a group, but group permissions on files still have no effect
24430
Delete/repair files with weird permissions/owner/group
7525
Why isn't this sudo mv operation with wildcard working?
111736
How can I change a user's default group in Linux?
122139
How to properly recursively chown files (including hidden dirs)
103069
How to fix 'sudo: no tty present and no askpass program specified' error?
129198
Group permissions for root not working in /tmp
89652
Lost access to sudo
35910
Why does sudo ignore aliases?
75827
When I run a sudo command it says unable to resolve host
18926
Type 'sudo' is not known in source list
16116
How to modify an invalid '/etc/sudoers' file?
57405
No permission to chown /mnt/hdd
94655
How do I solve "Incorrect permission on/usr/lib/policykit-1/polkit-agent-helper-1(need to setuid root)"?
111138
Sudo command no longer functions properly