Distribution-agnostic tool designed to deploy the Flatpak across multiple Linux environments silently.

install_flatpak.sh

#!/bin/bash

if [[ $EUID -ne 0 ]]; then
   exit 1
fi

declare -A os_map=(
    ["apt"]="apt install -qq -y flatpak"
    ["dnf"]="dnf install -y -q flatpak"
    ["pacman"]="pacman -S --noconfirm --needed --quiet flatpak"
    ["zypper"]="zypper --quiet install -y flatpak"
    ["apk"]="apk add --quiet flatpak"
    ["xbps-install"]="xbps-install -y -Q flatpak"
)

install_flatpak() {
    for cmd in "${!os_map[@]}"; do
        if command -v "$cmd" &> /dev/null; then
            eval "${os_map[$cmd]}" > /dev/null 2>&1
            return 0
        fi
    done
    return 1
}

setup_flathub() {
    flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
}

main() {
    if install_flatpak; then
      if ! command -v flatpak &> /dev/null; then
        setup_flathub
      fi
    else
        exit 1
    fi
}

main

Run with one command

curl -fsSL https://gist.githubusercontent.com/nukhes/899291eef2149f8862df68f3ab2199a6/raw/ | sudo sh