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blackvoidx/auto_zone.sh

Created July 29, 2025 12:46
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  1. blackvoidx created this gist Jul 29, 2025.
    145 changes: 145 additions & 0 deletions auto_zone.sh
    View file
    Original file line number Diff line number Diff line change
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    #!/bin/bash

    # Default timezone for --default option
    DEFAULT_TZ="Asia/Tehran"

    # Function to display help
    display_help() {
    echo "Usage: $0 [OPTION]"
    echo
    echo "Automatically detect and update timezone based on IP address location."
    echo
    echo "Options:"
    echo " -h, --help Display this help message and exit"
    echo " --default Set timezone to $DEFAULT_TZ without detection"
    echo
    echo "When run without options, the script will:"
    echo "1. Detect your current IP address and location"
    echo "2. Show your country and capital city"
    echo "3. Compare with current system timezone"
    echo "4. Prompt to update timezone if different"
    exit 0
    }

    # Function to get current public IP information
    get_ip_info() {
    echo "Detecting your IP information..."
    ip_info=$(curl -s https://ipinfo.io/json)

    if [ -z "$ip_info" ]; then
    echo "Error: Could not fetch IP information. Check your internet connection."
    exit 1
    fi

    ip=$(echo "$ip_info" | jq -r '.ip')
    country=$(echo "$ip_info" | jq -r '.country')
    city=$(echo "$ip_info" | jq -r '.city')
    timezone=$(echo "$ip_info" | jq -r '.timezone')

    echo "----------------------------------------"
    echo "Your current IP address: $ip"
    echo "Country: $country"
    echo "City: $city"
    echo "Detected timezone: $timezone"
    echo "----------------------------------------"
    }

    # Function to get the current system timezone
    get_current_timezone() {
    if [ -f /etc/localtime ]; then
    current_tz=$(readlink /etc/localtime | sed 's|/usr/share/zoneinfo/||')
    if [ -z "$current_tz" ]; then
    current_tz=$(timedatectl | grep "Time zone" | awk '{print $3}')
    fi
    echo "$current_tz"
    else
    current_tz=$(timedatectl | grep "Time zone" | awk '{print $3}')
    echo "$current_tz"
    fi
    }

    # Function to change timezone
    change_timezone() {
    local new_tz=$1

    echo "Changing timezone to $new_tz..."

    # Check if the timezone file exists
    if [ ! -f "/usr/share/zoneinfo/$new_tz" ]; then
    echo "Error: Timezone $new_tz not found in /usr/share/zoneinfo/"
    return 1
    fi

    # Change the timezone
    sudo unlink /etc/localtime 2>/dev/null
    sudo ln -s "/usr/share/zoneinfo/$new_tz" /etc/localtime

    # Verify the change
    current_tz=$(get_current_timezone)
    if [ "$current_tz" == "$new_tz" ]; then
    echo "Timezone successfully changed to $new_tz"
    echo "Current time: $(date)"
    else
    echo "Warning: Timezone change might not have worked correctly."
    echo "Current timezone is: $current_tz"
    fi
    }

    # Check if jq is installed (for JSON parsing)
    check_dependencies() {
    if ! command -v jq &> /dev/null; then
    echo "Error: jq is not installed. Please install it first."
    echo "For Debian/Ubuntu: sudo apt-get install jq"
    echo "For RHEL/CentOS: sudo yum install jq"
    exit 1
    fi

    if ! command -v curl &> /dev/null; then
    echo "Error: curl is not installed. Please install it first."
    exit 1
    fi
    }

    # Parse command line arguments
    while [[ "$#" -gt 0 ]]; do
    case $1 in
    -h|--help)
    display_help
    ;;
    --default)
    change_timezone "$DEFAULT_TZ"
    exit 0
    ;;
    *)
    echo "Unknown parameter: $1"
    display_help
    exit 1
    ;;
    esac
    shift
    done

    # Main script
    check_dependencies
    get_ip_info

    current_tz=$(get_current_timezone)
    echo "Current system timezone: $current_tz"

    if [ "$timezone" == "$current_tz" ]; then
    echo "Your timezone is already set correctly for your detected location."
    exit 0
    fi

    echo "Your timezone ($current_tz) doesn't match your detected location ($timezone)."
    read -p "Do you want to change your timezone to $timezone? [Y/n] " answer

    answer=${answer:-Y} # Default to Y if empty
    case ${answer^^} in
    Y|YES|"")
    change_timezone "$timezone"
    ;;
    *)
    echo "Timezone not changed."
    ;;
    esac