Shell Programming and Scripting

tr '[A-Z]' '[a-z]' < inputfile | while read LINE
do
        STR=""
        set -- $LINE
        while [ "$#" -gt 0 ]
        do
                [ -f "wavdir/$1.wav" ] && STR="$STR wavdir/$1.wav"
                shift
        done

        [ ! -z "$STR" ] && play $STR
done

1) Generate a function, let us call it "say_it()"
2) inside the function call SOX somehow to play your *.wav file. Something like this:-

say_it()
{
        /full/absolute/path/to/sox <your player options> somefile.wav
}

3) Use if - then - fi to call it something like this:-

number="one"
if [ "$number" == "one" ]
then
        # Your new function...
        say_it
fi

All "case"s can be catered for this way and this is its simplest and easiest to understand form, albeit slow...

Next try and make the function universal by making "somefile.wav" a variable...

#!/bin/sh

while read line; do
	set -- $line
	while [ "$1" ]; do
		echo aplay "$1.wav" # remove echo to actually let aplay play the wav file
		shift
	done
done

exit 0

~/unix.com$ cat input_file
one four five
two
three

~/unix.com$ cat input_file | sh the_above_script.sh 
aplay one.wav
aplay four.wav
aplay five.wav
aplay two.wav
aplay three.wav

while [ "$1" ]

while [ ! -z "$1" ]