# Sample macros for processing AliESDs from CERN Open Data Portal

## Requirements

Execute with aliroot5. Place `AliESDs.root` files in reach of the `chain->Add("AliESDs.root");` line on `runAnalysis.C` and execute.


## Instructions

1) Install aliBuild. Follow instructions on https://alice-doc.github.io/alice-analysis-tutorial/building/custom.html

2) Initialize AliPhysics

```bash
mkdir -p ~/alice
cd ~/alice
aliBuild init AliPhysics@master
```
3) Verify dependencies (Optional)

```bash
$ aliDoctor AliPhysics
```
4) Build AliPhysics with aliroot5 (this may take a long time)
```bash
aliBuild build AliPhysics --defaults user -z aliroot5
```
5) Enter AliPhysics environment
```bash
alienv enter AliPhysics/latest-aliroot5-user
```
6) Run the macro

```bash
aliroot runAnalysis.C
```
Results will be saved on two text files: `events_summary.txt` and `events_detail.txt`.

## Credits

This example is based on the ALICE analysis tutorial by Redmer A. Bertens.