RICbot Hotspot
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Raspberry hotspot
If Wi-Fi is not available, then start your own hotspot.
Network manager
Network Manager does it all in one go:
sudo nmcli device wifi hotspot ssid raspberry password pipiAnika
This will also make an entry in /etc/NetworkManager/system-connections/ called Hotspot.nmconnection
# default setup without priority [connection] id=Hotspot uuid=407d1e04-7971-4c33-9a71-c760c803ce9b type=wifi autoconnect=false interface-name=wlan0 [wifi] mode=ap ssid=raspberry [wifi-security] group=ccmp; key-mgmt=wpa-psk pairwise=ccmp; proto=rsn; psk=pipiAnika [ipv4] method=shared [ipv6] addr-gen-mode=default method=ignore [proxy]
Set autoconnect to true and add a priority line to make this the last-resort priority (low negative value).
sudo nano /etc/NetworkManager/system-connections/Hotspot.nmconnection # In the [connection] group, replace autoconnect=false with autoconnect-priority=-50
All other established wifi connections (with autoconnect=true) will then be attempted first.