debian-gnome/tools/internet_check

#!/bin/bash

if ping -c1 1.1.1.1 2>&1 >/dev/null; then
    connectivity=true
else
    connectivity=false
fi
echo "connectivity=$connectivity"

if ping -c1 google.fr 2>&1 >/dev/null; then
    dns=true
else
    dns=false
fi
echo "dns=$dns"

if nmcli device status | grep -E "^wl" | grep -q connected; then
    wifi=true
else
    wifi=false
fi
echo "wifi=$wifi"