#!/bin/bash
PS3='Choix:'
langs=("fr-en" "en-fr" "fr-pt" "pt-fr")
echo
select trad in "${langs[@]}"; do
echo
    case $trad in
        "fr-en")
	    trans fr:en "$@";echo "---"
            ;;
        "en-fr")
	    trans en:fr "$@";echo "---"
            ;;
        "fr-pt")
	    trans fr:pt "$@";echo "---"
            ;;
	"pt-fr")
	    trans pt:fr "$@";echo "---"
	    ;;
        *) echo "invalid option $REPLY";;
    esac
done