Linux Commands - File System Operations

Command to show required libraries

Shows the necessary libraries to run a specific program.

ldd program

Download a project from GitHub

Clones a GitHub repository to your local machine.

git clone git://github.com/directory/project.git

Install or update a .deb package

Installs a package and its dependencies.

apt-get install package

Add a repository

Adds a repository to the system’s source list.

sudo sh -c 'echo repository' >> /etc/apt/sources.list

Add PPA repository

Adds a Personal Package Archive (PPA) to the system sources.

sudo add-apt-repository ppa:repository

Update package list

Syncs the list of available packages from the repositories.

apt-get update

Upgrade installed packages

Upgrades all installed packages to their latest version.

apt-get upgrade

Remove a package from the system

Uninstalls a package and its configuration files.

apt-get remove package

Search for a package in the repositories

Searches for a package in the APT database.

apt-cache search package

Verify dependency resolution

Checks that all dependencies are correctly installed.

apt-get check

Clean downloaded package cache

Removes .deb files from the cache to free up disk space.

apt-get clean

Upgrade distribution

Upgrades the system distribution to a new version.

apt-get dist-upgrade

Install a package without dependencies

Installs a package without installing the required dependencies.

apt-get install --no-install-recommends package

Show details of an installed package

Displays complete information about a package, including dependencies.

apt-cache show package

Remove a package along with its configurations

Uninstalls a package and also removes its configuration files.

apt-get purge package

List unnecessary packages

Shows packages that were installed automatically and are no longer needed.

apt-get autoremove

Repair broken packages

Attempts to repair packages that are in an error state.

apt-get install -f

Create a custom repository file

You can create your own repository file for APT to recognize.

echo "deb [arch=amd64] http://my-repository.com/ubuntu/ focal main" | sudo tee /etc/apt/sources.list.d/my-repository.list

View repository keys

Lists the GPG keys of the repositories you have configured.

apt-key list

Install or update a .deb package

Installs or updates a Debian package on the system.

dpkg -i package.deb

Remove a .deb package from the system

Uninstalls an installed Debian package.

dpkg -r package

Show all installed .deb packages

Lists all currently installed Debian packages.

dpkg -l

Show .deb packages containing a specific name

Filters the list of installed packages by name.

dpkg -l | grep name

Get information about an installed package

Displays detailed information about a specific package.

dpkg -s package

Show list of files provided by an installed package

Lists all the files that belong to an installed package.

dpkg -L package

Show list of files in an uninstalled package

Displays the files included in a .deb package before installation.

dpkg --contents package.deb

Check which package a file belongs to

Determines the package that contains a specific file.

dpkg -S file

Install a package

Installs a package on the system.

sudo pacman -S package

Update all installed packages

Updates all packages on the system to the latest available version.

sudo pacman -Syu

Remove a package

Uninstalls a package from the system.

sudo pacman -R package

Remove a package and its unused dependencies

Uninstalls a package and its dependencies that are no longer needed.

sudo pacman -Rns package

Show all installed packages

Lists all currently installed packages.

pacman -Q

Show information about an installed package

Displays detailed information about a specific package.

pacman -Qi package

Show files installed by a package

Lists all the files that belong to an installed package.

pacman -Ql package

Search for a package in the repositories

Searches for a specific package in the repositories.

pacman -Ss name

Install a package

Installs a Snap package on the system.

sudo snap install package-name

Update a package

Updates a Snap package to the latest available version.

sudo snap refresh package-name

Remove a package

Uninstalls a Snap package from the system.

sudo snap remove package-name

List all installed Snap packages

Displays all currently installed Snap packages.

snap list

Get information about a Snap package

Displays detailed information about a specific Snap package.

snap info package-name

Show files of a Snap package

Lists all files from an installed Snap package.

snap run --list package-name