Which of the following options can be used with the useradd command to create a user with no login permissions?Select one:a.-Gb.-Nc.-Ud.-L

To create a user with no login permissions using the useradd command in Linux, the correct option from the provided choices is d. -L.

Explanation:

The useradd command is used to create a new user in a system. When you create a user but want to restrict their ability to log in, you can use the -L option, which locks the user's password. A locked password means that the user cannot authenticate and thus cannot log in, making it effectively impossible for them to gain access through regular means.

Here’s a brief overview of the other options:

• a. -G: This option is used to specify supplementary groups for the user.
• b. -N: This option is used to create a user without a home directory.
• c. -U: This option is for enabling the user’s password immediately upon creation, which is opposite to what is needed for no login permissions.

In summary, when you want to create a user that cannot log in, using the -L flag with the useradd command is the right choice.