Kernel, filesystem, processes... everything that you didn't secure with SELinux policies (which you'd know if you did)

And root means complete control of the kernel?

BlokchainB

 means: execute the following command as root. (it means "superuser do", because before sudo we only had 

opti@server:~$ id -a
uid=1000(opti) gid=1000(opti) groups=1000(opti)

opti@server:~$ sudo id -a
uid=0(root) gid=0(root) groups=0(root)

Stacker Saloon

saloon

`sudo` means: execute the following command as root. (it means "superuser do", because before sudo we only had `su` - "superuser", without the... do)

```console
opti@server:~$ id -a
uid=1000(opti) gid=1000(opti) groups=1000(opti)

opti@server:~$ sudo id -a
uid=0(root) gid=0(root) groups=0(root)
```