FreeBSD: change hostname permanently

To change FreeBSD’s server hostname:

hostname NEWNAME

To make it permanent, surviving reboot:

edit in file /etc/rc.conf
hostname="NEWNAME"

edit in file /etc/hosts
127.0.0.1 NEWNAME
::1       NEWNAME

Here is a SH script to download or fetch: hostname.sh

#!/bin/sh
# fetch http://wp.t66.asia/hostname.sh

host=`uname -n`
read -p "server hostname [$host]: " newhost
if [ -n "$newhost" ]; then
   hostname $newhost
   echo "CHANGE hostname: $host -> $newhost [`uname -n`]"
   echo "EDIT /etc/rc.conf"
   sed -i "" 's|hostname="'$host'"|hostname="'$newhost'"|g' /etc/rc.conf
   echo "EDIT /etc/hosts"
   sed -i "" 's|'$host'|'$newhost'|g' /etc/hosts
   cat /etc/rc.conf
   cat /etc/hosts
   echo New hostname: `uname -n`
else
   echo "server hostname unchanged"
fi

That’s it. No reboot is required.