Create FreeBSD Jail with qjail(8)

create_jail.sh

#!/bin/sh

USAGE(){
cat <<++EOS >&2
USAGE:`basename $0` jail_name ip_address flavor [ -y root_password default_user default_user_password ]
++EOS
}

# Const
NIC=em1

if [ "_$3" = "_" ] ; then
	USAGE
	exit 9
fi

jail_name=$1
ip_address=$2
flavor=$3
if [ "_$4" = "_-y" ] ; then
	if [ "_$7" = "_" ] ; then
		USAGE
		exit 9
	fi
	is_silent=$4
	root_password=$5
	default_user=$6
	default_user_password=$7
else
	is_silent=""
	echo -n "Input root password: "
	read root_password
	echo -n "Input default username: "
	read default_user
	echo -n "Input default user password: "
	read default_user_password
fi

cat <<++EOS

I will create a Jail with the following.
  jail_name :${jail_name}
  ip_address :${ip_address}
  flavor :${flavor}
  root_password :${root_password}
  default_user :${default_user}
  default_user_password:${default_user_password}

++EOS
if [ "${is_silent}" != "-y" ] ; then
	echo -n 'create? [y/n]: '
	read YN
	if [ "$YN" != "y" -a "$YN" != "yes" ]; then
		exit 9
	fi
fi

echo
echo "########### SETUP START ###########"
set -v

# create Jail
sudo qjail create -n $NIC -4 $ip_address -f $flavor $jail_name
sudo qjail config -k $jail_name
sudo qjail start $jail_name

# user settings
sudo jexec $jail_name sh -c "echo ${root_password} | pw usermod -n root -h 0"
sudo jexec $jail_name sh -c "echo ${default_user_password} | pw useradd -n ${default_user} -G wheel -m -h 0"

set +v
echo "########### SETUP END ###########"