I tried to tab complete something and I guess it wasnt there. I know you are not supposed to set the permissions to /etc/ like that, but my permissions seem to be all messed up. whoami prints out cannot find name for user ID 1002 and I cannot cd into /etc/ anymore. passwd and shadow use 640 and 644 so I am not sure why this is a problem. Regardless, is there any way to fix this?

The command run was sudo chmod 644 /etc/

I have no name!@vpn-server:/$ whoami
whoami: cannot find name for user ID 1002


I have no name!@vpn-server:/$ cd etc
bash: cd: etc: Permission denied

I have no name!@vpn-server:/$ ls -al etc
d????????? ? ? ? ?                ? .
d????????? ? ? ? ?                ? ..
d????????? ? ? ? ?                ? acpi
-????????? ? ? ? ?                ? adduser.conf

I have no name!@vpn-server:/$ sudo su
sudo: can't open /etc/sudoers: Permission denied