wifi-fixer-bash-script.sh

#!/bin/bash
# Detect the active wireless interface name 
interface=$(iw dev | awk '/Interface/ {print $2}')
echo -e "\033[1;33mThe name of your wireless interface is: $interface\033[0m \n"

# Check wireless signal strength and restart radio
signal_strength=$(iw dev $interface link | awk '/signal/ {print $2}')
if [ -z "$signal_strength" ]; then
  echo "Signal strength is not available, attempting to refresh Wi-Fi radio, NetworkManager, iwlwifi, and iwlmvm modules... \n"
  nmcli radio wifi on
  sudo rfkill unblock wifi
  sudo rmmod iwlmvm iwlwifi
  sudo modprobe iwlmvm iwlwifi
  sudo systemctl restart NetworkManager
  sleep 1
  signal_strength=$(iw dev $interface link | awk '/signal/ {print $2}')
  if [ -z "$signal_strength" ]; then
    echo -e "Unable to refresh Wi-Fi module, please check your configuration \n"
    if lsmod | grep iwlwifi > /dev/null; then
      echo -e "\033[1m AND FIXED: Ignore the rmmod and Wi-Fi module errors above. \n
      - The iwlwifi and iwlmvm modules are loaded\033[0m, but Wi-Fi should be connected or at least ready to connect. \n
      - If not, check Network settings and try reconnecting to your Wi-Fi router. \n 
      - If it's still not successful, try the Linux kernel \033[1;33mprevious to $(uname -r)\033[0m to see if that works. \n
      - Arrow up once, click enter to re-run this script to check your connection  \n"
    fi
    exit 1
  else
    echo "Signal strength is: $signal_strength dBm"
  fi
else
  echo "Signal strength is: $signal_strength dBm"
fi

# Check signal quality
signal_quality=$(nmcli d wifi list ifname $interface | grep '*' | awk '{print $9}')/100
echo -e "\033[1;33mSignal quality is: $signal_quality \033[0m"

for interface in $(iw dev | awk '$1=="Interface"{print $2}'); do
  echo $interface
  iw dev $interface get power_save
done

if command -v openvpn > /dev/null; then
  echo -e "\033[1;33mOpenVPN is installed.\033[0m"
else
  echo "OpenVPN is not installed."
fi

# Check if any VPN connection is active
if ip addr show tun0 > /dev/null 2>&1; then
  echo -e "\033[1;33mA VPN connection is active.\033[0m"
else
  echo "No VPN connection is active."
fi

# Check if connected to the right WAP, change assigned WAP to your preferred WAP where it says Your-SSID-Here.
connected_wap=$(iw dev $interface link | awk '/SSID/ {print $2}')
assigned_wap=ASSASSIN
if [ "$connected_wap" != "$assigned_wap" ]; then
  echo -e "\033[1;31mNot connected to the default WAP\033[00m.\n"
  echo -e "\033[1mEven if you have a working connection, check your Wi-Fi settings.\033[0m \n"
  exit 1
else
  echo -e "\n \033[1mConnected successfully to this WAP: $connected_wap\033[0m \n"
fi