Template:Install Flatpak sh

# Install FlatPak (on debian based distributions, others have to replace 'apt-get install'):
sudo apt-get install flatpak
# Register FlatHub repository:
sudo flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
# Install GnuCash ...
## for all users:
##  sudo is only needed for a --system install, if the user is not in the ''sudo'' group
##  --system is the default if --user is not specified
sudo flatpak install --system flathub org.gnucash.GnuCash
## or only you:
flatpak install --user flathub org.gnucash.GnuCash
# Run GnuCash:
flatpak run org.gnucash.GnuCash