fi
echo =============== vacuuming benchmark database... ================= >&2
-echo "vacuum" | postgres -D${1} bench > /dev/null
+echo "vacuum" | postgres -D"$1" bench > /dev/null
echo =============== running benchmark... ================= >&2
-time postgres -D${1} -texecutor -tplanner -c log_min_messages=log -c log_destination=stderr -c redirect_stderr=off bench < bench.sql 2>&1
+time postgres -D"$1" -texecutor -tplanner -c log_min_messages=log -c log_destination=stderr -c redirect_stderr=off bench < bench.sql 2>&1