Select the TWO statements that correctly describe Debian package management on a standard system.
LPIC-1 Exam 101-500, objective 102. Linux installation and package management medium
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The options
Choose 2.
Not correct apt-get update installs all available updates for installed packages
Wrong, and a classic confusion. apt-get update only refreshes the index of what is available; apt-get upgrade is what actually installs newer versions.
Correct The repositories apt downloads from are configured in /etc/apt/sources.list and in files under /etc/apt/sources.list.d/
Correct. Both locations are read; putting third-party repositories in their own file under sources.list.d is the conventional way to keep them separate from the distribution's own entries.
Correct dpkg-reconfigure re-runs a package's debconf configuration questions after it is installed
Correct. It is how you revisit choices such as the timezone (dpkg-reconfigure tzdata) or a package's setup options without reinstalling.
Not correct dpkg resolves and downloads any dependencies a package needs
Wrong. dpkg checks dependencies and refuses to configure a package whose dependencies are unmet, but it never downloads anything — that is apt's job.
Not correct apt-cache can install a package once you have found it
Wrong. apt-cache is strictly a query tool over the package index and makes no changes to the system.
Why
Three separations to hold onto: sources.list plus sources.list.d define where packages come from; update refreshes metadata while upgrade installs; and apt/apt-get resolve dependencies over repositories while dpkg operates on local files and only reports unmet dependencies. dpkg-reconfigure sits on the side, replaying a package's debconf configuration for an already-installed package.
Where this comes from
- Cited
- LPI exam objective 102.4
- What it says
- Debian package tools: dpkg, apt-get, apt-cache, dpkg-reconfigure and /etc/apt/sources.list.
Practise this
Reading one question is not practice. The trainer will draw a set from objective 102 and space the ones you get wrong.