Master Linux Package Managers: apt, yum, dnf, pacman, zypper

APT Package Manager (Debian/Ubuntu)

Refresh the local package index so the system knows about the latest versions available in the configured repositories. sudo apt update Install a specific package (e.g., Visual Studio Code). sudo apt install code Upgrade all installed packages to the newest versions. sudo apt upgrade Remove a package while also deleting its configuration files.

sudo apt remove code

YUM Package Manager (Red Hat/CentOS)

Update the repository metadata. sudo yum update Install a package (e.g., nginx). sudo yum install nginx Upgrade all installed packages. sudo yum upgrade Remove a package.

sudo yum remove nginx

DNF Package Manager (Fedora)

Refresh the repository metadata. sudo dnf update Install a package (e.g., git). sudo dnf install git Upgrade all installed packages. sudo dnf upgrade Remove a package.

sudo dnf remove git

Pacman Package Manager (Arch Linux)

Synchronize the package database with remote mirrors. sudo pacman -Sy Install a package (e.g., vim). sudo pacman -S vim Perform a full system upgrade, including dependency resolution. sudo pacman -Syu Remove a package and its unneeded dependencies.

sudo pacman -Rns vim

Zypper Package Manager (openSUSE)

Refresh repository metadata. sudo zypper refresh Install a package (e.g., firefox). sudo zypper install firefox Upgrade all installed packages. sudo zypper update Remove a package.

sudo zypper remove firefox

Advanced Package‑Manager Operations

Search for Packages

# Debian/Ubuntu
apt search nginx
# Red Hat/CentOS
yum search nginx
# Arch Linux
pacman -Ss nginx

Show Package Information

# Debian/Ubuntu
apt show nginx
# Red Hat/CentOS
yum info nginx
# Arch Linux
pacman -Si nginx

List Installed Packages

# Debian/Ubuntu
dpkg -l
# Red Hat/CentOS
rpm -qa
# Arch Linux
pacman -Q

List Files Belonging to a Package

# Debian/Ubuntu
dpkg -L nginx
# Red Hat/CentOS
rpm -ql nginx
# Arch Linux
pacman -Ql nginx

Using Software Repositories

Switching Mirrors (Arch Linux Example)

# Backup current mirrorlist
sudo cp /etc/pacman.d/mirrorlist /etc/pacman.d/mirrorlist.backup
# Download a fresh list of mirrors
sudo curl -o /etc/pacman.d/mirrorlist https://archlinux.org/mirrorlist/all/
# Uncomment Server lines
sed -i 's/^#Server/Server/' /etc/pacman.d/mirrorlist
# Keep the top 6 fastest mirrors
rankmirrors -n 6 /etc/pacman.d/mirrorlist | sudo tee /etc/pacman.d/mirrorlist
# Refresh the package database
sudo pacman -Sy

Adding a PPA (Ubuntu Example)

# Add the nginx stable PPA
sudo add-apt-repository ppa:nginx/stable
# Update the package index
sudo apt update
# Install nginx from the new source
sudo apt install nginx

Troubleshooting and Repair

Repair Broken Packages

# Debian/Ubuntu
sudo apt install --reinstall package_name
# Red Hat/CentOS
sudo yum reinstall package_name
# Arch Linux
sudo pacman -S package_name

Resolve Dependency Issues

# Debian/Ubuntu – attempt to fix missing dependencies
sudo apt install -f
# Red Hat/CentOS – utilities for cleaning and fixing problems
sudo yum install yum-utils
sudo package-cleanup --problems
sudo package-cleanup --dupes
sudo yum clean all
sudo yum update
# Arch Linux – full system upgrade also resolves most dependency conflicts
sudo pacman -Syu