freebsd-ports/databases/postgresql83-server/pkg-install-server

#! /bin/sh

# $FreeBSD$

PATH=/bin:/usr/sbin
PGUSER=pgsql
DB_DIR=${PKG_PREFIX}/${PGUSER}

backupwarning() { echo "

  =========== BACKUP YOUR DATA! =============
  As always, backup your data before
  upgrading. If the upgrade leads to a higher
  minor revision (e.g. 7.3.x -> 7.4), a dump
  and restore of all databases is
  required. This is *NOT* done by the port!

  Press ctrl-C *now* if you need to pg_dump.
  ===========================================
"
	sleep 5
}

case $2 in
PRE-INSTALL)
	backupwarning
	USER=${PGUSER}
	GROUP=${USER}
	UID=70
	GID=${UID}

	if pw group show "${GROUP}" 2>/dev/null; then
		echo "You already have a group \"${GROUP}\", so I will use it."
	else
		if pw groupadd ${GROUP} -g ${GID}; then
			echo "Added group \"${GROUP}\"."
		else
			echo "Adding group \"${GROUP}\" failed..."
			exit 1
		fi
	fi

	if pw user show "${USER}" 2>/dev/null; then
		echo "You already have a user \"${USER}\", so I will use it."
	else
		if pw useradd ${USER} -u ${UID} -g ${GROUP} -h - \
			-d ${DB_DIR} -c "PostgreSQL Daemon"
		then
			echo "Added user \"${USER}\"."
		else
			echo "Adding user \"${USER}\" failed..."
			exit 1
		fi
	fi

	if ! [ -x ~${PGUSER} ] ; then 
		mkdir -p ${DB_DIR}
		chown pgsql:pgsql ${DB_DIR}
	fi
	;;

BACKUPWARNING)
	backupwarning
	;;
esac