# cat -n /etc/hosts
1 # Do not remove the following line, or various programs
2 # that require network functionality will fail.
3 127.0.0.1 development.domain.org development localhost.localdomain localhost
4 ::1 localhost6.localdomain6 localhost6
11.2.1. hostnamectl - Control the system hostname
[root@localhost ~]# hostnamectl
Static hostname: localhost.localdomain
Icon name: computer-desktop
Chassis: desktop
Machine ID: 072e88a0fdd2447296554f3cd5129076
Boot ID: a978056f50544355abd723b328a89b6f
Operating System: CentOS Linux 7 (Core)
CPE OS Name: cpe:/o:centos:centos:7
Kernel: Linux 3.10.0-229.el7.x86_64
Architecture: x86_64