[Docker](http://www.docker.io) is an open-source project to easily create lightweight, portable, self-sufficient containers from any application. The same container that a developer builds and tests on a laptop can run at scale, in production, on VMs, bare metal, OpenStack clusters, public clouds and more.
CentOS (Community Enterprise Operating System) is a Linux distribution that attempts to provide a free, enterprise-class, community-supported computing platform which aims to be functionally compatible with its upstream source, Red Hat Enterprise Linux (RHEL).
This is for anything regarding the command line, in any operating system. All questions (including dumb ones), tips, and interesting programs/console applications you've found or made yourself are welcome. Linux / BSD / OSX / Windows CLI apps or questions or comments, we're happy to take them all!
[Salt](http://docs.saltstack.org/en/latest/index.html) is a **remote execution** and **configuration management** tool. Salt is designed to be secure using **AES encryption** and **public-key authentication**; incredibly scalable using an advanced **ZeroMQ** topology; fast and efficient using **msgpack**; and extensible using small and simple **Python** modules.