#!/bin/rc
rate=49716
norm=()
bareimf=()
while(~ $1 -?){
	switch($1){
	case -r
		rate=$2
		shift
	case -f
		norm=$2
		shift
	case -n
		bareimf=1
	case *
		echo usage: $0 '[-n] [-r rate] [-f norm]'
		exit usage
	}
	shift
}
cmd=(opl2 -r $rate)
if(~ $#bareimf 0)
	cmd=(imf '|' $cmd)
if(! ~ $#norm 0)
	cmd=($cmd '|' norm $norm)
echo $cmd
eval $cmd