construct

#!/bin/sh

set -e # Exit if any command fails

# Install the priority units in the order they are listed
priority_units=`cat priority-units | grep -v '^#'`
./install-unit $priority_units

# Then install the rest of the units

all_units=`ls -d */ | grep -v '^_' | sed 's/\///'`
./install-unit $all_units