gistfile1.sh

function subex {
    local SCRIPT=$1
    local ARG_STRING=$2
    local NOT_FOUND_ERROR=$3
    local IGNORE_ERRORS=$4

    if [ "$NOT_FOUND_ERROR" == "true"  -a ! -f $SCRIPT ]; then
        echo "$SCRIPT not found!"
        exit -1
    elif [ ! -f $SCRIPT ]
    then
        return 0
    fi

    local RETURN=`source $SCRIPT $ARG_STRING`
    local RESULT=$?

    if [ ! $IGNORE_ERRORS == "true" -a $RESULT -ne 0 ]
    then
        exit $RESULT
    fi

    echo $RETURN

    return 0
}