Now I can't remount anything and get access back. How can I fix it?
sudo returns
sudo: effective uid is not 0, is /usr/bin/sudo on a filesystem with the 'nosuid' option set or an NFS filesystem without root privileges?
mount returns
mount: failed to read mtab: No such file or directory
If I try to open anything new I get the message
Failed to execute child Failed to open PTY: No such file or directory