#!/bin/bash
echo 'Original post : https://unix.stackexchange.com/a/310699'

nmcli con add type wifi ifname wlan0 con-name Hostspot autoconnect no ssid Hostspot
nmcli con modify Hostspot 802-11-wireless.mode ap 802-11-wireless.band bg ipv4.method shared
nmcli con modify Hostspot wifi-sec.key-mgmt wpa-psk
nmcli conn modify Hostspot wifi-sec.psk "veryveryhardpassword1234"
nmcli con up Hostspot

# Note after reboot `nmcli con up Hotspot` doesn't work
# Use this command instead
#-------------------------
# UUID=#(grep uuid /etc/NetworkManager/system-connections/Hotspot | cut -d= -f2)
# nmcli con up uuid $UUID