Linux Operating System UBUNTU 26.04 LTS _ Linux Command to find out WHAT ARE ALL THE PACKAGES THAT ARE BEING INSTALLED inside a Linux Operating System UBUNTU 26.04 LTS

 

 

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Great question, Norizan! In Ubuntu (and most Debian‑based Linux systems), you can list all installed packages using the package manager. Here are the most common commands:

📦 Commands to List Installed Packages

• List all packages

  bash

  dpkg --get-selections
  

  This shows every package currently installed.

• Search installed packages

  bash

  dpkg -l | grep package_name
  

  Replace package_name with part of the name you’re looking for (e.g., filezilla).

• List with apt

  bash

  apt list --installed
  

  This gives a cleaner, scrollable list.

• Count installed packages

  bash

  apt list --installed | wc -l
  

  Handy if you want to know how many packages are installed in total.

• Export package list

  bash

  dpkg --get-selections > installed-packages.txt
  

  Saves the list to a text file for backup or review.

⚡ Bonus Tip

If you want to check which packages can be upgraded, you already saw the hint in your earlier update message:

bash

apt list --upgradable

So the simplest answer: run apt list --installed or dpkg --get-selections to see everything installed.

Would you like me to also show you how to generate a clean, searchable HTML or CSV report of your installed packages so you can browse them more easily on your big external display?