CentOS8 ほとんどのコマンドが実行できなくなった場合

sudo
bash: sudo: command not found...
Install package 'sudo' to provide command 'sudo'? [N/y] y


 * Waiting in queue... 
The following packages have to be updated:
 sudo-1.8.25p1-8.el8_1.x86_64   Allows restricted root access for specified users
Proceed with changes? [N/y] y


 * Waiting in queue... 
 * Waiting for authentication... Failed to install packages: Failed to obtain authentication.

ls
bash: ls: command not found..

cat
bash: cat: command not found...