This guide describes the installation, update, and uninstallation of ABRA Flexi on Linux distributions that use DEB packages (Ubuntu, Kubuntu, Debian).

Download the installation package with the .deb extension from the website. Open a terminal window and install the package using the following command:

During the installation, you will be prompted with the same questions as during installation via the graphical interface.

Download the installation package with the .deb extension from the website and double-click it. A package installation window will appear, in which you should click the Install Package button.

The installation will start, during which you will be asked whether you want to install Flexi only on the local computer, or whether you want to perform a network installation. Choose the installation type and click the Forward button.

If you chose a network installation, in the next step you will be asked whether you want to install the client or the server. The client includes the client application for working with accounting, while the server includes the data storage (database server) to which clients will connect and where the data of the accounted companies will be stored. After making your selection, click the Forward button.

The installation will then proceed, which may take up to several minutes depending on the speed of your computer. You will be informed of the installation result in a separate dialog.

Open a terminal window and uninstall the package using the following command:

During installation and uninstallation, you will be prompted with the same questions as during installation via the graphical interface.

In Gnome, open Synaptic Package Manager from the System – Administration menu. You will first be asked for the administrator password. After entering it, the package manager window will open, where you can use the Search button to find the flexibee package. Then select it and choose the Mark for Removal option from the context menu. After that, click the Apply button in the toolbar.

You will then be asked whether you want to remove the package. Click the Apply button.

During the uninstallation, you will be asked whether you also want to remove the data of the accounted companies. Check this option if you want to remove Flexi from the system along with all data of the accounted companies. Otherwise, leave the option unchecked and click the Forward button.

You will be informed of the uninstallation result by the final uninstallation dialog.

The installed package automatically checks for the availability of a newer version in the same way as other packages in the distribution, and if a newer version is available, it will offer it for installation.

The key used to sign the packages and repository is automatically installed during the first installation. If you want to download it manually, run the following command:

This command needs to be run if the following error appears (this also applies to newer versions of Linux):

On Ubuntu 22.04 LTS, you also need to do the following: in the /etc/apt directory, copy the file trusted.gpg to trusted.gpg.d using the following command:

Setting up a network server is described in the article Installation on a server.