You know there is a command that reports information about the running kernel but cannot remember its name. Which command searches the names and one-line descriptions of all manual pages for the word kernel?
LPIC-1 Exam 101-500, objective 103. GNU and Unix commands easy
Machine-checked — no person has signed for it. This question was read against the source cited below by an automated pass, which found no contradiction. That is a weaker claim than it sounds: the same kind of process wrote the question, so it can confirm its own mistake.
Treat it as a good draft rather than as settled fact, and read the source below before you rely on it. It is not used in mock exams here — only questions a person has signed for are.
How these questions are written — where each question comes from, what the verification ledger records, and what happens when one is found wrong.
The options
Correct man -k kernel
Correct. -k performs the apropos search over the manual page index, matching the keyword against page names and their short descriptions, and lists every hit with its section number.
Not correct man -f kernel
Wrong. -f is the whatis lookup: it prints the one-line description of pages whose NAME is exactly kernel, so a page called uname is never found.
Not correct man -a kernel
Wrong. -a displays, one after another, every manual page whose name is kernel. It still matches on the page name only.
Not correct man kernel
Wrong. This looks for a page named kernel in the configured section order and reports that no manual entry exists.
Why
man -k is the same search as the apropos command, and man -f is the same as whatis: the first matches the keyword anywhere in names and descriptions, the second only against the exact page name. Both read a pre-built index, so on a fresh system they may need mandb to be run before they return anything.
Where this comes from
- Cited
- manual page man(1)
Practise this
Reading one question is not practice. The trainer will draw a short set from objective 103 and space the ones you get wrong.
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