Which command shows the manual page describing the file format for /etc/fstab?

• A. man 5 passwd
• B. man 5 fstab
• C. man 5 crontab
• D. man fstab

Answer: (B)

Manual pages are organized into sections, and section 5 is dedicated to file formats and conventions. The /etc/fstab file is a text file whose structure and field meanings are defined in its file-format documentation, which lives in section 5. By requesting the manual page with the section number, you’re ensuring you see the authoritative description of how each line is structured, what each field means, and how the fields are delimited. That’s why the correct command is to view the section-5 page for fstab. Using just the page name or referencing other sections would not reliably show the /etc/fstab file format.