Show IP Address - A BASH Script to Show Private and Public IP Address Information in Linux and Unix.

showipaddr.sh

#!/usr/bin/env bash

# ------------------------------------------------------------------
# Script Name:   showipaddr.sh
# Description:   A Bash Script to display Private and
#                Public IP address details in Linux and Unix.
# Website:       https://gist.github.com/ostechnix
# Version:       1.0
# Usage:         chmod +x showipaddr.sh
#                ./showipaddr.sh
# ------------------------------------------------------------------

# Clear the screen
clear

# Function to check if jq is installed
check_jq_installed() {
    if ! command -v jq &> /dev/null; then
        echo "It appears that 'jq' is not installed. Please install 'jq' package to run this script."
        echo 
        echo "You can usually install 'jq' using:"
        echo
        echo "    sudo apk add jq            # On Alpine Linux"
        echo "    sudo pacman -S jq          # On Arch Linux/EndeavourOS/Manjaro"
        echo "    sudo apt-get install jq    # On Debian/Ubuntu"
        echo "    sudo yum install jq        # On RedHat/CentOS"
        echo "    sudo dnf install jq        # On Fedora"
        echo "    sudo zypper install jq     # On SUSE/openSUSE"
        echo "    brew install jq            # On macOS (with Homebrew)"
        echo
        exit 1
    fi
}

# Check if jq is installed
check_jq_installed

# Get hostname
hostname=$(hostname)

# Function to display public IP information
display_public_ip() {
    local public_ip_info=$(curl -s http://ip-api.com/json)
    local public_ip=$(echo "$public_ip_info" | jq -r '.query')
    local city=$(echo "$public_ip_info" | jq -r '.city')
    local region=$(echo "$public_ip_info" | jq -r '.regionName')
    local country=$(echo "$public_ip_info" | jq -r '.country')
    local lat=$(echo "$public_ip_info" | jq -r '.lat')
    local lon=$(echo "$public_ip_info" | jq -r '.lon')
    local isp=$(echo "$public_ip_info" | jq -r '.isp')

#    echo "---------------------------------------"
#    echo "Public IP Information:"
#    echo "IP Address: $public_ip"
#    echo "ISP: $isp"
#    echo "City: $city"
#    echo "Region: $region"
#    echo "Country: $country"
#    echo "Coordinates: $lat, $lon"
#    echo "---------------------------------------"

    echo "------------------------------------------------------"
    echo "Public IP Information:"
    printf "%-20s %s\n" "IP Address" ": $public_ip"
    printf "%-20s %s\n" "ISP" ": $isp"
    printf "%-20s %s\n" "City" ": $city"
    printf "%-20s %s\n" "Region" ": $region"
    printf "%-20s %s\n" "Country" ": $country"
    printf "%-20s %s\n" "Coordinates" ": $lat, $lon"
    echo "------------------------------------------------------"

}

# Function to display local network information
display_local_ip() {
    local local_ipv4=$(hostname -I | awk '{print $1}')
    local local_ipv6=$(ip -6 addr show | grep 'inet6' | awk '{print $2}' | grep -v '^::1/' | head -n 1)
    local router_ip=$(ip route | grep default | awk '{print $3}')
    local dns_server=$(grep nameserver /etc/resolv.conf | cut -d ' ' -f 2)

#    echo "---------------------------------------"
#    echo "Local Network Information:"
#    echo "Hostname: $hostname"
#    echo "Local IPv4 Address: $local_ipv4"
#    echo "Local IPv6 Address: $local_ipv6"
#    echo "Router IP Address: $router_ip"
#    echo "DNS Server: $dns_server"
#    echo "---------------------------------------"

    echo "------------------------------------------------------"
    echo "Local Network Information:"
    printf "%-20s %s\n" "Hostname" ": $hostname"
    printf "%-20s %s\n" "Local IPv4 Address" ": $local_ipv4"
    printf "%-20s %s\n" "Local IPv6 Address" ": $local_ipv6"
    printf "%-20s %s\n" "Router IP Address" ": $router_ip"
    printf "%-20s %s\n" "DNS Server" ": $dns_server"
    echo "------------------------------------------------------"
}

# Prompt user to choose what information to display
echo "Select the information to display:"
echo "1. Local IP"
echo "2. Public IP"
echo "3. Both Local and Public IP"
echo "Enter your choice (1/2/3):"
read choice

# Display the chosen information
case $choice in
    1)
        display_local_ip
        ;;
    2)
        display_public_ip
        ;;
    3)
        display_local_ip
        display_public_ip
        ;;
    *)
        echo "Invalid choice. Please enter 1, 2, or 3."
        ;;
esac