Ubuntu permissions are not sufficient (the status of the entry is not root but its own default logon name)

Ubuntu permissions are not sufficient (the status of the entry is not root but its own default logon name)

is to create a folder with its own default login name says insufficient permissions. This is required to sudo to the root user.

Sudo-i

Then enter the user's password, you can do what you want to do

Sudo-i is a Linux terminal command to change the user's permission to use the command, for example, in the Linux command terminal, the beginning of the "user@ubuntu:~$", when the command, will be prompted to enter a password, then enter the password, it will become "Root@ubuntu: ~# ", which is to change the user's permissions on some commands.