Ubuntu:Ease of use on servers, desktops, laptops
https://www.ubuntu.com/
CentOS
https://www.centos.org/
RedHat:Large enterprise / corporate customers
https://www.redhat.com/en/technologies/linux-platforms/enterprise-linux
CoreOS
https://coreos.com/
getting started ubuntu
>vagrant init ubuntu/trusty64
then, start vagrant up command.
here comes
Welcome to Ubuntu 14.04.5 LTS (GNU/Linux 3.13.0-105-generic x86_64)
* Documentation: https://help.ubuntu.com/
System information as of Wed Jan 18 12:13:23 UTC 2017
System load: 0.09 Processes: 75
Usage of /: 3.5% of 39.34GB Users logged in: 0
Memory usage: 26% IP address for eth0: 10.0.2.15
Swap usage: 0% IP address for eth1: 192.168.53.10
Graph this data and manage this system at:
https://landscape.canonical.com/
Get cloud support with Ubuntu Advantage Cloud Guest:
http://www.ubuntu.com/business/services/cloud
New release '16.04.1 LTS' available.
Run 'do-release-upgrade' to upgrade to it.
