Create WiFi Repeater/Extender using Ubuntu Laptop

sudo apt install hostapd

sudo apt-get install build-essential git

git clone https://github.com/oblique/create_ap

cd create_ap

sudo make install

sudo systemctl start create_ap

sudo systemctl enable create_ap

# find WIFI interface

ls /sys/class/net

create_ap wlan0 wlan0 MyAccessPoint MyPassPhrase