We can face the situation with restricted rights on a server. This is a use case for sudo. You can get restricted access to specific commands as root, but not to the whole system, which is very good!

I need access to virt-top to monitor kvm based virtual machines on a big host system. Add the following line to sudoers file:

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myusername ALL= NOPASSWD: /usr/bin/virt-top

This line allows myusername to run virt-top without password from any terminal.

A couple of useful links:

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