A build fails because /usr/include/zlib.h is missing, and no installed package provides it. Which command finds the Debian package that ships that file so you can install it?
LPIC-1 Exam 101-500, objective 102. Linux installation and package management medium
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 apt-file search /usr/include/zlib.h
Correct. apt-file searches the file lists published by the repositories, so it finds files in packages that are not installed. Its index is refreshed with apt-file update.
Not correct dpkg -S /usr/include/zlib.h
Wrong here. dpkg -S searches only the local database of installed packages, and the whole problem is that nothing installed owns the file.
Not correct apt-cache show zlib.h
Wrong. apt-cache show prints the record of a named package; zlib.h is a file name, not a package name.
Not correct locate zlib.h
Wrong. locate searches a database of paths that exist on this machine, so it cannot report files that were never installed.
Why
There are two file-to-package searches on Debian and they differ in scope. dpkg -S covers what is installed, using /var/lib/dpkg/info. apt-file covers what is available, using Contents indexes downloaded from the repositories, which is why it must be installed separately and its index refreshed before first use.
Where this comes from
- Cited
- manual page apt-file(1)
Practise this
Reading one question is not practice. The trainer will draw a short set from objective 102 and space the ones you get wrong.
More questions on this objective
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