If you're looking for a man page for a command and nothing shows up (for example read), which resource should you use?

• A. Consult the information pages with info.
• B. help command
• C. Check the web for docs.
• D. Use the --help flag only.

Answer: (B)

When a command doesn’t have a man page, use the shell’s built-in help. For Bash builtin commands like read, the quickest and most reliable source is the help facility, accessed by typing help followed by the command name, e.g., help read. This shows usage, options, and behavior specific to the shell’s builtins, which is exactly what you’re trying to understand when a man page is unavailable.

Info pages can be helpful if they exist, and web docs are a fallback, but they aren’t as consistently accessible or authoritative for builtins. The --help flag is common for many external commands, but not all builtins expose a separate --help option, whereas the built-in help command covers those cases directly.