How to check installed packages in linux command

The apt command is an essential tool, created by Debian, used to manage packages in Debian, Ubuntu, Linux Mint, and other derivative distributions. In this tutorial, we will learn how to use the command to list the installed packages in Ubuntu.

Listing Installed Packages

Example 1. To list installed packages with , execute:

$ sudo apt list --installed

Example 2. You can also pipe to the command to show a more manageable output:

$ sudo apt list --installed | less

Example 3. Use the command to filter out a specific package name and see if it’s installed:

$ sudo apt list --installed | grep package_name

List Upgradable Packages

Example 1. List the packages that are due for an update with the following command.

First, you should update the repository cache:

$ sudo apt update $ sudo apt list --upgradable

Example 2. Pipe to the command to search for a specific upgradeable package:

$ sudo apt --upgradable | grep package_name

Searching For an Installed Package

Example 1. To search for an installed package, execute:

$ apt search package_name

Example 2. The next synta

apt get list packages installed from repository

apt get list installed package version