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1. Find any raspberry pi on a network. Find any raspberry pi on a network.

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   ## Find all OUI's owned by vendor

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   curl -sS "http://standards-oui.ieee.org/oui/oui.txt" | grep "Raspberry Pi" | grep "(hex)"

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   Returns something like...

2. Articles about raster compression Articles about raster compression

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   http://blog.cleverelephant.ca/2015/02/geotiff-compression-for-dummies.html

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   https://kokoalberti.com/articles/geotiff-compression-optimization-guide/

3. mapbox_bits.md mapbox_bits.md

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   ## Blank mapbox sytle

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   ```

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   style: {

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           version: 8,

4. aus_airports.geojson aus_airports.geojson

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   {

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   "type": "FeatureCollection",

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   "name": "airports_aus",

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   "crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },

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   "features": [

5. Forward a port over ssh Forward a port over ssh

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   # Forward a port over SSH

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   Handy for connecting to a remote postgres db

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   ssh -i ./[key.pem]  -L [local_port]:127.0.0.1:[remote_port] [email protected]

6. find timestamp islands in potgres find timestamp islands in potgres

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   SELECT *, count(*) FILTER (WHERE step) OVER (ORDER BY timestamp) AS grp

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   FROM  (

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      SELECT *

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          , (lag(timestamp) OVER (ORDER BY timestamp) <= timestamp - interval '60 min') AS step

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      FROM   tracker