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JuliaScript.jl

★ 90 Open GitHub ↗

finally fast julia scripts

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# JuliaScript

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**You have a julia script.jl and want to run it fast?**

Welcome to `juliascript`! It is built for exactly that purpose.

## Installation

1. Make sure `julia` is installed via [juliaup](https://github.com/JuliaLang/juliaup)
2. Then run the following in a Linux bash terminal
  ```bash
  curl -o ~/.juliaup/bin/juliascript -fsSL https://raw.githubusercontent.com/jolin-io/JuliaScript.jl/main/bin/juliascript
  chmod +x ~/.juliaup/bin/juliascript
  ```

Now you can run `juliascript yourscript.jl` on the terminal, or use the shebang `#!/usr/bin/env juliascript` as the first line of your exectuable script.

## How it works

- The first time `juliascript yourscript.jl` runs `yourscript.jl`, it will create a corresponding julia module and track all precompile statements from the actual run.
- From the second time onwards, it will then run as fast as julia's precompilation system allows for it.

### Further speedup
Sometimes the speedup this gives may not be satisfying. Then you can manually create a **sysimage** to improve performance even further.
```bash
juliascript packagecompile yourscript.jl
```
Depending on your script this may take from 5 minutes up to 30 minutes.

Every further call `juliascript yourscript.jl` will then use the sysimage (until you make a change to yourscript.jl).

### Experimental environment variables
- `JULIASCRIPT_PACKAGECOMPILE_ALWAYS=true`
  
  If set, `juliascript myscript.jl` will automatically packagecompile a new or changed `myscript.jl`. The creation of the sysimage is run in the background, consuming compute resources, but otherwise it is not blocking the script execution.

JuliaScript.jl

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