set-hostname.sh

#!/bin/sh

if [ $(id -u) -ne 0 ]; then
	echo "Nope. Simon didn't say so!"
	exit 1;
fi

if [ -z "$1" ]; then
	echo "What's my name? Say my name, bitch!"
	exit 1
fi

newname=$1

# set server name
echo $newname > /etc/hostname
hostname $newname

# ensure name is in /etc/hosts, but only once
if grep -q "$newname" /etc/hosts; then
	echo "$newname already in /etc/hosts"
else
	echo "127.0.0.1 $newname" >> /etc/hosts;
fi

echo "Changed hostname to ${newname}!"