Add system-update

bin/system-update

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+set -e
+set -u
+set -o pipefail
+
+# Ensure running as root
+if [ $EUID != 0 ]; then
+    sudo "$0" "$@"
+    exit $?
+fi
+
+# Determining the current OS
+if [ -f /etc/os-release ]; then
+  # freedesktop.org and systemd
+  . /etc/os-release
+  OS=$NAME
+  VER=$VERSION_ID
+elif type lsb_release >/dev/null 2>&1; then
+  # linuxbase.org
+  OS=$(lsb_release -si)
+  VER=$(lsb_release -sr)
+elif [ -f /etc/lsb-release ]; then
+  # For some versions of Debian/Ubuntu without lsb_release command
+  . /etc/lsb-release
+  OS=$DISTRIB_ID
+  VER=$DISTRIB_RELEASE
+elif [ -f /etc/debian_version ]; then
+  # Older Debian/Ubuntu/etc.
+  OS=Debian
+  VER=$(cat /etc/debian_version)
+else
+  # Fall back to uname, e.g. "Linux <version>", also works for BSD, etc.
+  OS=$(uname -s)
+  VER=$(uname -r)
+fi
+
+# Update commands per OS
+case $OS in
+  Fedora\ Linux)
+    exec dnf upgrade --refresh;
+    exec flatpak update --assumeyes;
+    ;;
+  *)
+    echo "Cannot update system with OS: " $OS
+    ;;
+esac