#!/bin/sh

addarg() {
    args="$args $1"
    [ -z "$one" ] && one="$1" && return
    [ -z "$two" ] && two="$1" && return
}

for arg in "$@"
do
    case "$arg" in
        param) param=1; ;;
            *) addarg "$arg" ;;
    esac
    shift;
done

echo "one=$one"
echo "two=$two"
echo "all=$args"