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There are a few things that will make managing your pico engine and writing KRL code easier. 

Managing your Pico Engine

If you need to remove your pico engine and change to a different version, follow these instructions.

1. If you wish to remove all picos and start over, use one or more of these commands.

   Code Block
   rm -r ~/.pico-engine/db #removes all picos and cached ruleset source code rm -r ~/.pico-engine/rulesets #removes compiled ruleset node modules rm -r ~/.pico-engine #shortcut to do both of the above

2. Remove the pico engine code.

   Code Block
   npm rm -g pico-engine

3. Install a specific version of the pico engine code. In this example, the engine as of February 22, 2017 was at version 0.5.1.

   Code Block
   npm install -g pico-engine@0.5.1

Hosting Code

Because the rules engine reads your KRL program from the Web, it has to be available online. You can host it anywhere, but Github works especially well. See these instructions for more information about how to use Github to host KRL. 

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1. You can use the "Engine Rulesets" page, linked from the pico engine home page, and cut copy and paste your KRL ruleset into it. 
2. You can download and run the node pico engine compiler on your own machine and run it from the command line. 

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