Linux Installers

Question 1

apt basics

Answer 1

apt reads /etc/apt/sources.list
which contains repositories
apt directs installations/uninstallations to dpkg

Question 2

Update the local apt cache with listing of packages, so to search for packages later on from this apt-cache

Answer 2

apt-get update

Question 3

Upgrade packages that have upgrades available

Answer 3

apt-get upgrade

Question 4

Install/remove packages with apt

Remove conf files that left after removing a package

Answer 4

apt-get install apache2
apt-get remove apache2
apt autoremove

Question 5

Remove the package with its conf files with apt

Answer 5

apt-get purge chromium-browser

Question 6

Upgrade all packages up to the next release with apt-get

Answer 6

apt-get dist-upgrade

so all new necessary packages will be installed while upgrading the current package

Question 7

Download a package but not install this with apt

Answer 7

apt-get download htop

Question 8

Search for packages with apt

Answer 8

apt-cache search apache

Question 9

List basic info about a package with apt

Answer 9

apt-cache show apache2

Question 10

List detailed info about a package with apt

Answer 10

apt-cache showpkg apache2

Question 11

Display detailed info on a package with dpkg

Display basic info on a package with dpkg

Answer 11

1. dpkg –info htop_2.01.deb

2. dpkg –status htop_2.01.deb

Question 12

List packages that match the string provided with dpkg

Answer 12

dpkg -l nano

Question 13

Install package with dpkg

Remove package

Answer 13

dpkg -i htop_2.01.deb

dpkg -r htop

Question 14

List all files installed with dpkg package

Answer 14

dpkg -L htop

Question 15

Remove package with dpkg with conf files

Answer 15

dpkg -P nano

Question 16

Search through package DB for a file specified with dpkg

Answer 16

dpkg -S nano

Question 17

Allows to modification of deb package by re-running app’s configuration tool

Answer 17

dpkg-reconfigure console-setup

Question 18

Yum global conf file
Yum’s repositories
Yum cash location of latest requests

Answer 18

/etc/yum.conf
/etc/yum.repos.d/
/var/cache/yum

Question 19

Search online repos with updates to upgrade packages with yum

Answer 19

yum update

Question 20

Search for specific package with yum

Answer 20

yum search httpd

Question 21

Get info about specific package with yum

Answer 21

yum info httpd

Question 22

Display all packages installed by yum

Answer 22

yum list installed | grep httpd

Question 23

Clean yum cache info and its local db file

Answer 23

yum clean all

Question 24

Install/remove/reinstall app with yum

Answer 24

yum -y install httpd
yum remove httpd
yum reinstall httpd

Question 25

Remove package and it dependencies with yum

Answer 25

yum autoremove httpd

Question 26

Find with yum what package provides a specified file name

Answer 26

yum whatprovides */htpd

Question 27

Download a package with yum

Answer 27

yum install yum-utils | yumdownloader htop

Question 28

Rpm DB location

Answer 28

/var/lib/rpm

Question 29

Repair corrupted rpm db

Answer 29

rpm --rebuilddb

Question 30

List files in rpm package | List files in app

Answer 30

rpm -qpl htop.2.2.0.rpm | rpm -ql htop

Question 31

Display info on rpm package

Answer 31

rpm -qpi htop.2.2.0.rpm | the info as yum info htop would provide

Question 32

List all rpm packages installed on a system

Answer 32

rmp -qa | the same as yum list installed would provide

Question 33

Install a package with rpm | Upgrade the package with a newer version

Answer 33

rpm -i htop.2.2.9.rpm or rpm -ivh htop.2.2.9.rpm | rpm -U htop.2.3.1.rpm

Question 34

Uninstall rpm package

Answer 34

rpm -e htop

Question 35

Verify installed rpm packages

Answer 35

rpm -Va

Question 36

Query if rpm package is installed

Answer 36

rpm -q htop

Question 37

List conf files of rpm package

Answer 37

rpm -qc sysstat