Before removing an installed package you want to see the list of capabilities and shared libraries that this package itself depends on. Which rpm query prints that?
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
Not correct rpm -q --provides mypkg
Wrong, and the inverse. --provides lists the capabilities the package offers to others, which is what other packages' requirements are matched against.
Correct rpm -qR mypkg
Correct. -R, spelled out as --requires, lists the dependencies of the queried package: capability names, shared object names and version constraints.
Not correct rpm -q --whatrequires mypkg
Wrong direction. --whatrequires takes a capability and reports which installed packages depend on it, so it answers 'who needs this', not 'what does this need'.
Not correct rpm -V mypkg
Wrong. -V verifies the installed files of a package against the database, reporting changed size, mode, digest or timestamps. It says nothing about dependencies.
Why
RPM dependencies are expressed as capabilities rather than package names: a package requires strings such as libssl.so.3()(64bit) or config(mypkg), and some other package provides them. --requires and --provides are the two ends of that relationship for one package, while --whatrequires and --whatprovides search the database for the packages on the other end of a given capability. Add -p to ask any of these of an uninstalled .rpm file.
Where this comes from
- Cited
- manual page rpm(8)
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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