LFCS Certification Software Package Management 2

Question 1

Which command lists all files installed by a specific RPM package named 'nginx'?

Accepted Answer

rpm -ql nginx

Answer

The `rpm -ql` command lists all files that belong to the specified installed package.

Question 2

On a Debian-based system, which command shows the installation candidate version of a package before installing it?

Accepted Answer

apt-cache policy <package>

Answer

`apt-cache policy` displays version priorities and the installation candidate from configured repositories.

Question 3

What does the `yum history undo <id>` command do?

Accepted Answer

Reverts a specific yum transaction by its ID

Answer

`yum history undo <id>` reverses the changes made by the transaction with the specified ID.

Question 4

Which file in a Debian package contains post-installation scripts?

Accepted Answer

postinst

Answer

The `postinst` maintainer script runs automatically after a package's files are unpacked.

Question 5

How do you configure a system to use a local directory as a YUM repository?

Accepted Answer

Create a .repo file in /etc/yum.repos.d/ with baseurl=file:///path

Answer

A .repo file with a file:// URI in /etc/yum.repos.d/ tells YUM to use the local directory as a package source.

LFCS Certification Practice Test