How to grant permissions to a new user in Ubuntu?

In Ubuntu, you can grant permissions to new users using the following steps.

1. create a new user
2. freshly registered user

sudo adduser newuser

1. Add new users to the sudo group: If you want to give new users administrative privileges, you can add them to the sudo group. Run the following command:

sudo usermod -aG sudo newuser

1. Execute with superuser privileges.

sudo -l -U newuser

1. Change the permissions on a file or directory
2. The directory path for web content is /var/www/html.

sudo chown -R newuser:newuser /var/www/html

1. Change mode
2. The file index.html is located in the directory /var/www/html.

sudo chown newuser /var/www/html/index.html

Please note, in order to ensure system security, it is important to carefully review and allocate user permissions, while avoiding granting unnecessary permissions.