# Procfile¶

Procfile is a simple text file called Procfile that describe the components required to run an applications. It is the way to tell to tsuru how to run your applications.

This document describes some of the more advances features of and the Procfile ecosystem.

A Procfile should look like:

web: gunicorn -w 3 wsgi


## Syntax¶

Procfile is a plain text file called Procfile placed at the root of your application.

Each project should be represented by a name and a command, like bellow:

<name>: <command>


The name is a string which may contain alphanumerics and underscores and identifies one type of process.

command is a shell commandline which will be executed to spawn a process.

## Environment variables¶

You can reference yours environment variables in the command:

web: ./manage.py runserver 0.0.0.0:\$PORT