Linux Package Management Guide

Package management is essential for installing, updating, and maintaining software on Linux systems. This guide covers the major package managers across different distributions.

Overview: Package Managers by Distribution

Distribution	Package Manager	Package Format	Example
Debian/Ubuntu	`apt`, `dpkg`	`.deb`	`apt install nginx`
RHEL/CentOS 8+	`dnf`	`.rpm`	`dnf install httpd`
RHEL/CentOS 7	`yum`	`.rpm`	`yum install httpd`
Fedora	`dnf`	`.rpm`	`dnf install package`
Arch Linux	`pacman`	`.pkg.tar.zst`	`pacman -S package`
openSUSE	`zypper`	`.rpm`	`zypper install package`
Alpine Linux	`apk`	`.apk`	`apk add package`

APT - Debian/Ubuntu Package Management

Basic APT Commands

# Update package index
sudo apt update

# Upgrade all packages
sudo apt upgrade

# Full upgrade (may remove packages)
sudo apt full-upgrade

# Install package
sudo apt install packagename

# Remove package
sudo apt remove packagename

# Remove package and config files
sudo apt purge packagename

# Remove unnecessary packages
sudo apt autoremove

# Search for packages
apt search keyword

# Show package information
apt show packagename

Advanced APT Usage

# Install specific version
sudo apt install packagename=version

# Install without recommends
sudo apt install --no-install-recommends packagename

# Download package without installing
apt download packagename

# Simulate installation (dry run)
apt install -s packagename

# Fix broken dependencies
sudo apt --fix-broken install

# Clean package cache
sudo apt clean
sudo apt autoclean

# List installed packages
apt list --installed

# List upgradable packages
apt list --upgradable

# Show package dependencies
apt depends packagename

# Show reverse dependencies
apt rdepends packagename

Managing Repositories

# Add repository (Ubuntu)
sudo add-apt-repository ppa:repo/name
sudo apt update

# Remove repository
sudo add-apt-repository --remove ppa:repo/name

# Edit sources list
sudo nano /etc/apt/sources.list

# Add repository key
wget -qO - https://repo.example.com/key.gpg | sudo apt-key add -

# List repositories
grep ^ /etc/apt/sources.list /etc/apt/sources.list.d/*

dpkg - Low-Level Package Management

# Install .deb file
sudo dpkg -i package.deb

# Remove package
sudo dpkg -r packagename

# List all installed packages
dpkg -l

# Search installed packages
dpkg -l | grep pattern

# Show package contents
dpkg -L packagename

# Find which package owns a file
dpkg -S /path/to/file

# Extract .deb without installing
dpkg-deb -x package.deb output-dir/

YUM/DNF - RHEL/CentOS/Fedora

Basic DNF Commands

# Update package database
sudo dnf check-update

# Upgrade all packages
sudo dnf upgrade

# Install package
sudo dnf install packagename

# Remove package
sudo dnf remove packagename

# Search packages
dnf search keyword

# Show package info
dnf info packagename

# List installed packages
dnf list installed

# List available packages
dnf list available

# Clean cache
sudo dnf clean all

Advanced DNF Usage

# Install package group
sudo dnf group install "Development Tools"

# List groups
dnf group list

# Show group info
dnf group info "System Tools"

# Install specific version
sudo dnf install packagename-version

# Downgrade package
sudo dnf downgrade packagename

# Show history
dnf history

# Undo last transaction
sudo dnf history undo last

# Reinstall package
sudo dnf reinstall packagename

# Check for updates
dnf check-update

# Update specific package
sudo dnf update packagename

YUM Commands (CentOS 7 and earlier)

# Update system
sudo yum update

# Install package
sudo yum install packagename

# Remove package
sudo yum remove packagename

# Search packages
yum search keyword

# List installed
yum list installed

# Show package info
yum info packagename

# Install group
sudo yum groupinstall "Development Tools"

# List groups
yum grouplist

# Clean cache
sudo yum clean all

Managing Repositories (RHEL/CentOS)

# List enabled repositories
dnf repolist
yum repolist

# Add repository
sudo dnf config-manager --add-repo https://example.com/repo.repo

# Enable repository
sudo dnf config-manager --set-enabled reponame

# Disable repository
sudo dnf config-manager --set-disabled reponame

# Install EPEL repository
sudo dnf install epel-release  # RHEL 8/CentOS 8
sudo yum install epel-release  # CentOS 7

# Edit repo files
sudo vi /etc/yum.repos.d/reponame.repo

RPM - Low-Level Package Management

# Install .rpm file
sudo rpm -ivh package.rpm

# Upgrade package
sudo rpm -Uvh package.rpm

# Remove package
sudo rpm -e packagename

# Query installed packages
rpm -qa

# Query package info
rpm -qi packagename

# List package files
rpm -ql packagename

# Find which package owns file
rpm -qf /path/to/file

# Verify package
rpm -V packagename

Pacman - Arch Linux

Basic Pacman Commands

# Sync and update system
sudo pacman -Syu

# Install package
sudo pacman -S packagename

# Remove package
sudo pacman -R packagename

# Remove package and dependencies
sudo pacman -Rs packagename

# Search remote packages
pacman -Ss keyword

# Search local packages
pacman -Qs keyword

# Show package info
pacman -Si packagename

# List installed packages
pacman -Q

# List explicitly installed
pacman -Qe

# Clean package cache
sudo pacman -Sc

Advanced Pacman Usage

# Install local package
sudo pacman -U package.pkg.tar.zst

# Download without installing
sudo pacman -Sw packagename

# List package files
pacman -Ql packagename

# Find owner of file
pacman -Qo /path/to/file

# Check for orphaned packages
pacman -Qtdq

# Remove orphans
sudo pacman -Rs $(pacman -Qtdq)

# Force refresh package database
sudo pacman -Syy

# List AUR helpers
# yay, paru (install separately)

Snap - Universal Packages

Basic Snap Commands

# Install snap
sudo apt install snapd  # Debian/Ubuntu
sudo dnf install snapd  # Fedora

# Find snaps
snap find keyword

# Install snap
sudo snap install packagename

# Install from channel
sudo snap install packagename --channel=edge

# List installed snaps
snap list

# Update snap
sudo snap refresh packagename

# Update all snaps
sudo snap refresh

# Remove snap
sudo snap remove packagename

# Show snap info
snap info packagename

# Revert to previous version
sudo snap revert packagename

Flatpak - Universal Packages

Basic Flatpak Commands

# Install Flatpak
sudo apt install flatpak

# Add Flathub repository
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

# Search applications
flatpak search keyword

# Install application
flatpak install flathub app.id

# List installed
flatpak list

# Run application
flatpak run app.id

# Update applications
flatpak update

# Uninstall application
flatpak uninstall app.id

# Remove unused runtimes
flatpak uninstall --unused

Common Package Management Tasks

System Updates

# Debian/Ubuntu
sudo apt update && sudo apt upgrade -y

# RHEL/CentOS/Fedora
sudo dnf upgrade -y

# Arch Linux
sudo pacman -Syu

# Full system upgrade with cleanup
sudo apt update && sudo apt full-upgrade -y && sudo apt autoremove -y

Installing Development Tools

# Debian/Ubuntu
sudo apt install build-essential

# RHEL/CentOS/Fedora
sudo dnf groupinstall "Development Tools"

# Arch Linux
sudo pacman -S base-devel

Managing Dependencies

# Show dependencies
apt depends packagename    # Debian/Ubuntu
dnf repoquery --requires packagename  # RHEL/Fedora
pacman -Si packagename | grep Depends  # Arch

# Show what depends on package
apt rdepends packagename
dnf repoquery --whatrequires packagename

# Fix broken dependencies
sudo apt --fix-broken install  # Debian/Ubuntu
sudo dnf check  # RHEL/Fedora

Package Information

# Package details
apt show packagename       # Debian/Ubuntu
dnf info packagename       # RHEL/Fedora
pacman -Si packagename     # Arch

# Package changelog
apt changelog packagename  # Debian/Ubuntu
dnf changelog packagename  # RHEL/Fedora

# List package files
dpkg -L packagename        # Debian/Ubuntu
rpm -ql packagename        # RHEL/Fedora
pacman -Ql packagename     # Arch

Best Practices

Regular Maintenance

# Weekly update routine
sudo apt update && sudo apt upgrade -y && sudo apt autoremove -y

# Clean package cache
sudo apt clean      # Debian/Ubuntu
sudo dnf clean all  # RHEL/Fedora
sudo pacman -Sc     # Arch

# Check for security updates
sudo apt list --upgradable | grep security
sudo dnf updateinfo list security

Before Major Changes

# Simulate installation
apt install -s packagename
dnf install --assumeno packagename

# Create system snapshot (if using Btrfs/LVM)
sudo snapper create -d "Before package upgrade"

# List package files before installing
apt-file list packagename
dnf repoquery -l packagename

Troubleshooting

# Fix broken packages
sudo apt --fix-broken install
sudo dpkg --configure -a

# Rebuild package cache
sudo apt clean && sudo apt update

# Check package integrity
sudo debsums -c       # Debian/Ubuntu
rpm -Va               # RHEL/Fedora
pacman -Qk           # Arch

# Force reinstall
sudo apt install --reinstall packagename
sudo dnf reinstall packagename
sudo pacman -S packagename

Quick Reference

Essential Commands by Distribution

# Debian/Ubuntu (APT)
sudo apt update              # Update package list
sudo apt upgrade             # Upgrade packages
sudo apt install pkg         # Install package
sudo apt remove pkg          # Remove package
apt search keyword           # Search packages

# RHEL/CentOS/Fedora (DNF/YUM)
sudo dnf check-update        # Check for updates
sudo dnf upgrade             # Upgrade packages
sudo dnf install pkg         # Install package
sudo dnf remove pkg          # Remove package
dnf search keyword           # Search packages

# Arch Linux (Pacman)
sudo pacman -Syu             # Update system
sudo pacman -S pkg           # Install package
sudo pacman -R pkg           # Remove package
pacman -Ss keyword           # Search packages