. Debian-Based Systems (e.g., Ubuntu, Debian):
Use the dpkg command:

• Description: Lists all installed packages.
• Optional: Pipe the output to grep to filter results, e.g., dpkg --get-selections | grep package-name.

Alternatively, use the apt command:

• Description: Displays a list of installed packages with version information.

2. Red Hat-Based Systems (e.g., CentOS, Fedora, RHEL):
Use the rpm command:

• Description: Lists all installed packages.

Alternatively, use the dnf or yum package managers:

or

• Description: Outputs installed packages with version and repository details.

3. Arch-Based Systems (e.g., Arch Linux, Manjaro):
Use the pacman command:

• Description: Lists all installed packages with their version numbers.

4. SUSE-Based Systems (e.g., openSUSE):
Use the zypper command:

• Description: Lists installed packages along with their version details.

5. Generic Package Manager (Flatpak):
If you are using Flatpak, list installed packages with:

Tips for Usage

• Redirect output to a file for analysis:
  bash

  Копіювати код

  dpkg --get-selections > installed_packages.txt

• Combine with grep for targeted searches:
  bash

  Копіювати код

  rpm -qa | grep package-name