So far, you have secured access to your VM with a public key and two-factor authentication. You have also controlled access to a specific file and directory, using group permissions. The next foundational piece is allowing users to run elevated commands on the VM. Users typically need access to commands that may require administrative permissions, such as restarting a service or installing a missing package. As an administrator, you want to keep a tight control on who can run which commands. On Linux operating systems, the sudo (superuser do) command allows users to run specific commands as root or another ...
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