Display WiFi status monitor script using Bash

get_wifi_info.sh

#!/bin/bash

# The name of the wireless interface (e.g., wlp2s0). You may need to change this.
INTERFACE="wlp2s0"

# URL to check for internet connectivity
CHECK_URL="http://www.google.com"

# Function to check internet connectivity
check_internet() {
    # Check if we can fetch a page from a known URL
    if curl --connect-timeout 5 --head $CHECK_URL &> /dev/null; then
        echo -e "\e[32mOnline\e[0m"  # Green color for "Online"
    else
        echo -e "\e[31mOffline\e[0m"  # Red color for "Offline"
    fi
}

# Function to get WiFi information using nmcli
get_wifi_info() {
    # Get the line with the current connection from nmcli
    NMCLI_LINE=$(nmcli -t -f IN-USE,SSID,BSSID,MODE,CHAN,RATE,SIGNAL device wifi | grep '^\*')

    # Extracting information using awk
    SSID=$(echo "$NMCLI_LINE" | awk -F: '{print $2}')
    # BSSID=$(echo "$NMCLI_LINE" | awk -F: '{printf "%s:%s:%s:%s:%s:%s", $3, $4, $5, $6, $7, $8}')
    BSSID=$(echo "$NMCLI_LINE" | awk -F: '{printf "%s:%s:%s:%s:%s:%s", $3, $4, $5, $6, $7, $8}' | sed 's/\\//g')
    MODE=$(echo "$NMCLI_LINE" | awk -F: '{print $9}')
    CHANNEL=$(echo "$NMCLI_LINE" | awk -F: '{print $10}')
    RATE=$(echo "$NMCLI_LINE" | awk -F: '{print $11}')
    SIGNAL=$(echo "$NMCLI_LINE" | awk -F: '{print $12}')

    # Get IP Address
    IP=$(ip -f inet addr show $INTERFACE | grep -oP 'inet \K[\d.]+' || echo "N/A")

    # Check Internet Connectivity
    INTERNET_STATUS=$(check_internet)

    # Print the output
    echo "SSID: $SSID, BSSID: $BSSID, IP: $IP, Mode: $MODE, Channel: $CHANNEL, Rate: $RATE, Signal: ${SIGNAL}%, Internet: $INTERNET_STATUS"
}

# Infinite loop to get data every second
while true; do
    get_wifi_info
    sleep 1
done