---
title: Writing app scripts
template: docs
taxonomy:
    category: docs
routes:
  default: '/packaging_scripts'
---


# General architecture ?

# Global args like $app, install args, etc.

# Setting system

# Helper system

# Configuration/template system (ynh_add_config, __FOOBAR__ syntax, common helpers like ynh_add_nginx_config etc)

# Common operations

### installing/upgrading app sources
### adding configurations
### adding a systemd service
### curl / automatizing install forms
### classic stuff for nodejs apps
### classic stuff for php apps
### classic stuff for python apps
### classic stuff for ??? apps