This is an interesting solution to wifi on a headless computer – when no wifi access point is found, automagically flip over to becoming an access point so it’s still accessible locally! From http://sirlagz.net/:
I’ve had issues with my WiFi in the past, and with my Pi running headless it’s sometimes a pain to get it connected back up to WiFi, so I’ve created this little script to start hostapd and dnsmasq whenever the WiFi connection went down, which allowed me to SSH into the Pi even though it wasn’t connected to the network, because it was broadcasting it’s own network !
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