What are the solutions to the problem of insufficient folder permissions when configuring IP in Linux?

When setting the ip configuration file for Linux, an error is reported: tcb is not in the sudoers file, this incident will be reported (insufficient permissions) The solutions are:

1. Use the command

sudo chmod -R 777 某一目录

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2. sudo passwd Enter the password again Enter the password

and you will find that the $ before the command changes to #, then you have successfully obtained the highest authority.

3. Directly log in to the root account with the highest authority

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