compare versions

version=$( cat .version )

#compare versions as numerics

function ver { printf "%03d%03d%03d%03d%03d" $(echo "$1" | tr '.' ' ' | sed 's/\(^\| \)0\([0-9][0-9]*\)/\1\2/g'); }

if [[ -f inst/.installed ]]  || [[ $(which launch_universc.sh) != *"not found" ]]

    then

    current_version=$( launch_universc.sh --version | tail -n 2 | head -n 1 | cut -d' ' -f3 )

    if [[ $version == $current_version ]]

    if [[ $(ver $version) == $(ver $current_version) ]]

        then

        echo "universc ${current_version} is already installed in `which launch_universc.sh`"

        exit 0

    elif [[ $version -le $current_version ]]

        #exit 0

    elif [[ $(ver $version) -le $(ver $current_version) ]]

        then

        echo "universc ${current_version} is already installed in `which launch_universc.sh`"

        echo "a newer version of universc is installed"

        echo "run the following to remove it and downgrade to version ${version}"

        echo "    make remove --prefix=$(cat inst/.installed)"

        echo "    make install --prefix=${prefix}"

        exit 1

    elif [[ $version -ge $current_version ]]

    elif [[ $(ver $version) -ge $(ver $current_version) ]]

       then

        echo "universc ${current_version} is already installed in `which launch_universc.sh`"

        echo "Upgrading to universc ${version}"

    fi

fi

echo $SHELL inst/REMOVE

exit 0

echo $prefix > inst/.installed

echo prefix=$prefix