deploy ssh keys, configure sudo and install salt on new debian server

salt-bootstrap.sh

#!/bin/sh
# 
# deploy ssh keys, configure sudo and install salt on new debian server
# require config file .myenv with variables MYUSER and SSHPUBKEY 

source_my_env()
{
	if [ -f ${MYENV} ]
	then
		. ${MYENV}
	else
		printf "ERROR: ENV file ${MYENV} not found"
		exit 1
	fi
}

get_home_dir()
{
	USER=$1
	grep ${USER} /etc/passwd | awk -F: '{print $6}'
}

deploy_ssh_keys()
{
	for user in root ${MYUSER}
	do
		HOMEDIR=$(get_home_dir ${user})
		test -d ${HOMEDIR}/.ssh || mkdir ${HOMEDIR}/.ssh
		chmod 700 ${HOMEDIR}/.ssh
		printf ${SSHPUBKEY} >> ${HOMEDIR}/.ssh/authorized_keys
		chmod 600 ${HOMEDIR}/.ssh/authorized_keys
		chown -R ${user}:${user} ${HOMEDIR}
	done
}

config_sudo()
{
	apt-get -y install sudo
	printf "${MYUSER} ALL=(ALL:ALL) NOPASSWD: ALL" >> /etc/sudoers	
}

upgrade_os()
{
	apt-get update && apt-get -y dist-upgrade
}

install_salt()
{
	test -d /etc/apt/sources.list.d || mkdir /etc/apt/sources.list.d
	printf "deb http://debian.saltstack.com/debian wheezy-saltstack main" >> /etc/apt/sources.list.d/saltstack.list
	wget -q -O- "http://debian.saltstack.com/debian-salt-team-joehealy.gpg.key" | apt-key add -
	apt-get -y install salt-minion
}

#*** MAIN ***
MYENV="$(dirname $0)/.myenv"
source_my_env

printf "1. configure ssh keys for users jmlrt and root"
deploy_ssh_keys

printf "2. upgrade os"
upgrade_os

printf "3. configure sudo"
config_sudo

printf "4. install saltstack"
install_salt