Which THREE of these dpkg options query the local database of installed packages, rather than operating on a .deb archive file?
LPIC-1 Exam 101-500, objective 102. Linux installation and package management hard
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
Choose 3.
Correct -l
Correct. --list prints the installed packages matching a name pattern, with their status flags and versions, from the dpkg database.
Correct -L
Correct. --listfiles prints the recorded file list of an installed package.
Correct -S
Correct. --search looks a path up in the file lists of installed packages and names the owner.
Not correct -c
Wrong. --contents lists the files inside a .deb archive and therefore takes a file name.
Not correct -i
Wrong. --install unpacks and configures a .deb archive named on the command line; it changes the database rather than querying it.
Not correct -x
Wrong. --extract unpacks the data member of a .deb archive into a directory, without consulting or updating the database at all.
Why
dpkg options split cleanly by what their argument is. The query options -l, -L and -S take package names or paths and read /var/lib/dpkg, so they work only for software that is installed. The archive options -c, -x, -e, -I and -i take the path of a .deb file. Reading the argument first is the reliable way to tell the two families apart under exam conditions.
Where this comes from
- Cited
- manual page dpkg(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.
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