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 for a system app (available to all users):
sudo flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
# or only you:
flatpak remote-add --user --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