Which command creates a new user with the comment field 'Sam Brown' and username sbrow?

• A. useradd -c "Sam Brown" sbrow
• B. adduser sbrow -c 'Sam Brown'
• C. useradd -m -c Sam Brown sbrow
• D. passwd -c 'Sam Brown' sbrow

Answer: (A)

Setting the full name in the user account is done via the GECOS field. The -c option to the user creation command provides that value. In this example, the command creates a user named sbrow and assigns the string Sam Brown to the GECOS (comment) field. The quotes are needed because the name contains a space, ensuring the entire string is passed as one argument.

If you want a home directory created automatically, you can add -m, but that’s optional for just setting the comment. The other options either use a different tool with different syntax, or would fail because the argument with spaces isn’t quoted, or misuse a command intended for password changes.