diff --git a/ap.sh b/ap.sh
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+#!/bin/bash
+# The script configures simultaneous AP and Managed Mode Wifi on Raspberry Pi
+# Distribution Raspbian Buster
+# works on:
+#           -Raspberry Pi Zero W
+#           -Raspberry Pi 3 B+
+#           -Raspberry Pi 3 A+
+# Licence: GPLv3
+# Author: Mickael Lehoux <mickael.lehoux@gmail.com>
+# Repository: https://github.com/MkLHX/AP_STA_RPI_SAME_WIFI_CHIP
+# Special thanks to: https://github.com/lukicdarkoo/rpi-wifi
+
+# set -exv
+
+# Error management
+set -o errexit
+set -o pipefail
+set -o nounset
+
+DEFAULT='\033[0;39m'
+WHITE='\033[0;02m'
+RASPBERRY='\033[0;35m'
+GREEN='\033[1;32m'
+RED='\033[1;31m'
+
+_welcome() {
+    VERSION="1.7.2"
+    echo -e "${RASPBERRY}\n"
+    echo -e "                                                                       "
+    echo -e "  /888888  /8888888                         /888888  /88888888 /888888 "
+    echo -e " /88__  88| 88__  88          /88          /88__  88|__  88__//88__  88"
+    echo -e "| 88  \ 88| 88  \ 88         | 88         | 88  \__/   | 88  | 88  \ 88"
+    echo -e "| 88888888| 8888888/       /88888888      |  888888    | 88  | 88888888"
+    echo -e "| 88__  88| 88____/       |__  88__/       \____  88   | 88  | 88__  88"
+    echo -e "| 88  | 88| 88               | 88          /88  \ 88   | 88  | 88  | 88"
+    echo -e "| 88  | 88| 88               |__/         |  888888/   | 88  | 88  | 88"
+    echo -e "|__/  |__/|__/                             \______/    |__/  |__/  |__/"
+    echo -e "                                                                       "
+    echo -e "                                                    version ${VERSION} "
+    echo -e " By https://github.com/MkLHX                                           "
+    echo -e "${GREEN}                                                               "
+    echo -e "Manage AP + STA modes on Raspberry Pi with the same wifi chip\n\n      "
+}
+
+_logger() {
+    echo -e "${GREEN}"
+    echo "${1}"
+    echo -e "${DEFAULT}"
+}
+
+_usage() {
+    cat 1>&2 <<EOF
+Configures simultaneous AP and Managed Mode Wifi on Raspberry Pi
+
+USAGE:
+    ap_sta_config.sh --ap <ap_ssid> [<ap_password>] --client <client_password> [<client_password>] --country <iso_3166_country_code>
+
+    # configure AP + STA
+    ap_sta_config.sh --ap ap_ssid ap_passphrases --client client_ssid client_passphrase --country FR
+
+    # configure AP + STA and change the wifi mode
+    ap_sta_config.sh --ap ap_ssid ap_passphrases --client client_ssid client_passphrase --country FR --hwmode b
+
+    # update the AP configuration
+    ap_sta_config.sh --ap ap_ssid ap_passphrases --ap-only
+
+    # update the STA (client) configuration
+    ap_sta_config.sh --client client_ssid client_passphrase --country FR --sta-only
+
+    # logs are written in /var/log/ap_sta_wifi folder
+
+PARAMETERS:
+    -a, --ap      	    AP SSID & password
+    -c, --client	    Client SSID & password
+    -i, --ip            AP IP (by default ip pattern 192.168.10.x)
+    -cy, --country      ISO3166 Country Code (by default FR)
+    -hw, --hwmode       Mode Wi-Fi a = IEEE 802.11a, b = IEEE 802.11b, g = IEEE 802.11g (by default g)
+
+FLAGS:
+    -ao, --ap-only      Set only AP
+    -so, --sta-only     Set only STA
+    -n, --no-internet   Disable IP forwarding
+    -h, --help          Show this help
+EOF
+    exit 0
+}
+
+POSITIONAL=()
+while [[ $# -gt 0 ]]; do
+    key="$1"
+
+    case $key in
+    -c | --client)
+        CLIENT_SSID="$2"
+        CLIENT_PASSPHRASE="$3"
+        shift
+        shift
+        shift
+        ;;
+    -a | --ap)
+        AP_SSID="$2"
+        AP_PASSPHRASE="$3"
+        shift
+        shift
+        shift
+        ;;
+    -i | --ip)
+        ARG_AP_IP="$2"
+        shift
+        shift
+        ;;
+    -cy | --country)
+        ARG_COUNTRY_CODE="$2"
+        shift
+        shift
+        ;;
+    -hw | --hwmode)
+        ARG_WIFI_MODE="$2"
+        shift
+        shift
+        ;;
+    -n | --no-internet)
+        NO_INTERNET="true"
+        shift
+        ;;
+    -ao | --ap-only)
+        AP_ONLY="true"
+        shift
+        ;;
+    -so | --sta-only)
+        STA_ONLY="true"
+        shift
+        ;;
+    -h | --help)
+        _usage
+        shift
+        ;;
+    *)
+        POSITIONAL+=("$1")
+        shift
+        ;;
+    esac
+done
+set -- "${POSITIONAL[@]}"
+
+if [ $(id -u) != 0 ]; then
+    echo -e "${RED}"
+    echo "You need to be root to run this script! Please run 'sudo bash $0'"
+    echo -e "${DEFAULT}"
+    exit 1
+fi
+
+# check if crontabs are initialized
+if [[ 1 -eq $(crontab -l | grep -cF "no crontab for root") ]]; then
+    echo -e ${RED}
+    echo "this script need to use crontab."
+    echo "you have to initialize and configure crontabs before run this script!"
+    echo "run 'sudo crontab -e'"
+    echo "select EDITOR nano or whatever"
+    echo "edit crontab by adding '# a comment line' or whatever"
+    echo "save and exit 'ctrl + s' & 'crtl + x'"
+    echo "restart the script 'sudo bash $0'"
+    echo -e "${DEFAULT}"
+    exit 1
+fi
+
+(test -v AP_SSID && test -v CLIENT_SSID && test -v ARG_COUNTRY_CODE) || (test -v AP_SSID && test -v AP_ONLY) || (test -v CLIENT_SSID && test -v ARG_COUNTRY_CODE && test -v STA_ONLY) || _usage
+
+WIFI_MODE=${ARG_WIFI_MODE:-'g'}
+COUNTRY_CODE=${ARG_COUNTRY_CODE:-'FR'}
+AP_IP=${ARG_AP_IP:-'192.168.10.1'}
+AP_IP_BEGIN=$(echo "${AP_IP}" | sed -e 's/\.[0-9]\{1,3\}$//g')
+MAC_ADDRESS="$(cat /sys/class/net/wlan0/address)"
+
+if ! test -v AP_ONLY; then
+    AP_ONLY="false"
+fi
+
+if ! test -v STA_ONLY; then
+    STA_ONLY="false"
+fi
+
+# welcome cli user
+_welcome
+
+if test true != "${STA_ONLY}" && test true == "${AP_ONLY}"; then
+    # Install dependencies
+    _logger "check if dependencies needed"
+
+    # keep order of dependencies installation
+    if [[ $(dpkg -l | grep -c cron) == 0 ]]; then
+        apt-get -y update
+        apt-get -y install cron
+    fi
+
+    if [[ $(dpkg -l | grep -c dhcpcd) == 0 ]]; then
+        apt-get -y update
+        apt-get -y install dhcpcd
+    fi
+
+    if [[ $(dpkg -l | grep -c hostapd) == 0 ]]; then
+        apt-get -y update
+        apt-get -y install hostapd
+    fi
+
+    if [[ $(dpkg -l | grep -c dnsmasq) == 0 ]]; then
+        apt-get -y update
+        apt-get -y install dnsmasq
+    fi
+fi
+
+if test true != "${STA_ONLY}"; then
+    # Populate `/etc/udev/rules.d/70-persistent-net.rules`
+    _logger "Populate /etc/udev/rules.d/70-persistent-net.rules"
+    bash -c 'cat > /etc/udev/rules.d/70-persistent-net.rules' <<EOF
+SUBSYSTEM=="ieee80211", ACTION=="add|change", ATTR{macaddress}=="${MAC_ADDRESS}", KERNEL=="phy0", \
+RUN+="/sbin/iw phy phy0 interface add ap0 type __ap", \
+RUN+="/bin/ip link set ap0 address ${MAC_ADDRESS}
+
+EOF
+fi
+
+if test true != "${STA_ONLY}"; then
+    # Populate `/etc/dnsmasq.conf`
+    _logger "Populate /etc/dnsmasq.conf"
+    bash -c 'cat > /etc/dnsmasq.conf' <<EOF
+interface=lo,ap0
+no-dhcp-interface=lo,wlan0
+bind-interfaces
+server=8.8.8.8
+domain-needed
+bogus-priv
+dhcp-range=${AP_IP_BEGIN}.50,${AP_IP_BEGIN}.150,12h
+
+EOF
+fi
+
+if test true != "${STA_ONLY}"; then
+    # Populate `/etc/hostapd/hostapd.conf`
+    _logger "Populate /etc/hostapd/hostapd.conf"
+    bash -c 'cat > /etc/hostapd/hostapd.conf' <<EOF
+ctrl_interface=/var/run/hostapd
+ctrl_interface_group=0
+interface=ap0
+driver=nl80211
+ssid=${AP_SSID}
+hw_mode=${WIFI_MODE}
+channel=11
+wmm_enabled=0
+macaddr_acl=0
+auth_algs=1
+wpa=2PASSPHRASE
+$([ $AP_PASSPHRASE ] && echo "wpa_passphrase=${AP_PASSPHRASE}")
+wpa_key_mgmt=WPA-PSK
+wpa_pairwise=TKIP CCMP
+rsn_pairwise=CCMP
+
+EOF
+fi
+
+if test true != "${STA_ONLY}"; then
+    # Populate `/etc/default/hostapd`
+    _logger "Populate /etc/default/hostapd"
+    bash -c 'cat > /etc/default/hostapd' <<EOF
+DAEMON_CONF="/etc/hostapd/hostapd.conf"
+
+EOF
+fi
+
+if test true != "${AP_ONLY}"; then
+    # Populate `/etc/wpa_supplicant/wpa_supplicant.conf`
+    _logger "Populate /etc/wpa_supplicant/wpa_supplicant.conf"
+    bash -c 'cat > /etc/wpa_supplicant/wpa_supplicant.conf' <<EOF
+ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
+update_config=1
+country=${COUNTRY_CODE}
+network={
+    ssid="${CLIENT_SSID}"
+    $([ $CLIENT_PASSPHRASE ] && echo "psk=\"${CLIENT_PASSPHRASE}\"")
+    id_str="AP1"
+    scan_ssid=1
+}
+
+EOF
+fi
+
+# Populate `/etc/network/interfaces`
+# TODO manage eth0 interface
+# if current device is model B+ with ethernet port
+# auto eth0
+# allow-hotplug eth0
+# iface eth0 inet manual
+#
+_logger "Populate /etc/network/interfaces"
+bash -c 'cat > /etc/network/interfaces' <<EOF
+source-directory /etc/network/interfaces.d
+
+auto lo
+auto ap0
+auto wlan0
+
+iface lo inet loopback
+
+allow-hotplug ap0
+iface ap0 inet static
+    address ${AP_IP}
+    netmask 255.255.255.0
+    # network ${AP_IP_BEGIN}.0
+    # broadcast ${AP_IP_BEGIN}.255
+    # gateway ${AP_IP}
+    hostapd /etc/hostapd/hostapd.conf
+
+allow-hotplug wlan0
+iface wlan0 inet manual
+    wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
+iface AP1 inet dhcp
+
+EOF
+
+if test true != "${STA_ONLY}"; then
+    # Populate `/bin/manage-ap0-iface.sh`
+    _logger "Populate /bin/manage-ap0-iface.sh"
+    bash -c 'cat > /bin/manage-ap0-iface.sh' <<EOF
+#!/bin/bash
+# check if hostapd service succes to start or not
+# in our case, it cannot start when /var/run/hostapd/ap0 exist
+# so we have to delete it
+echo 'Check if hostapd.service is hang cause ap0 exist...'
+hostapd_is_running=\$(service hostapd status | grep -c "Active: active (running)")
+if test 1 -ne "\${hostapd_is_running}"; then
+    rm -rf /var/run/hostapd/ap0 | echo "ap0 interface does not exist, the faillure is elsewhere"
+fi
+
+EOF
+    chmod +x /bin/manage-ap0-iface.sh
+fi
+
+if test true != "${STA_ONLY}"; then
+    # Populate `/bin/rpi-wifi.sh`
+    _logger "Populate /bin/rpi-wifi.sh"
+    bash -c 'cat > /bin/rpi-wifi.sh' <<EOF
+#!/bin/bash
+echo 'Starting Wifi AP and STA client...'
+ifdown --force wlan0
+ifdown --force ap0
+ifup ap0
+ifup wlan0
+$([ "${NO_INTERNET-}" != "true" ] && echo "sysctl -w net.ipv4.ip_forward=1")
+$([ "${NO_INTERNET-}" != "true" ] && echo "iptables -t nat -A POSTROUTING -s ${AP_IP_BEGIN}.0/24 ! -d ${AP_IP_BEGIN}.0/24 -j MASQUERADE")
+$([ "${NO_INTERNET-}" != "true" ] && echo "systemctl restart dnsmasq")
+echo 'WPA Supplicant reconfigure in 5sec...'
+sleep 5
+wpa_cli -i wlan0 reconfigure
+
+EOF
+    chmod +x /bin/rpi-wifi.sh
+fi
+
+if test true != "${STA_ONLY}"; then
+    # unmask and enable dnsmasq.service / hostapd.service
+    _logger "Unmask and enable dnsmasq.service / hostapd.service"
+    systemctl unmask dnsmasq.service hostapd.service
+    systemctl enable dnsmasq.service hostapd.service
+    systemctl daemon-reload
+fi
+
+# create ap sta log folder
+mkdir -p /var/log/ap_sta_wifi
+touch /var/log/ap_sta_wifi/ap0_mgnt.log
+touch /var/log/ap_sta_wifi/on_boot.log
+
+# Finish
+if test true == "${STA_ONLY}"; then
+    wpa_cli -i wlan0 reconfigure
+    sleep 15
+    ifconfig wlan0 down # better way for docker
+    sleep 2
+    ifconfig wlan0 up # better way for docker
+    _logger "STA configuration is finished!"
+elif test true == "${AP_ONLY}"; then
+    /bin/bash /bin/rpi-wifi.sh
+    _logger "AP configuration is finished!"
+elif test true != "${STA_ONLY}" && test true != "${AP_ONLY}"; then
+    _logger "AP + STA configurations are finished!"
+    _logger "You need to reboot Raspbery Pi to apply changes.."
+fi
+
+if test true != "${STA_ONLY}"; then
+    _logger "Wait during wlan0 reconnecting to internet..."
+    sleep 15
+    curl https://raw.githubusercontent.com/MkLHX/AP_STA_RPI_SAME_WIFI_CHIP/master/ap_sta_cron.sh | bash -s --
+fi