FRA: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/FRA - from package: quantlib-examples

You may install the required package with command apt-get install {package}
Error in other languages:
FRA: bevel nie gevind nie
FRA: comandă negăsită
FRA: comando não encontrado
FRA: commande introuvable
FRA: command not found
FRA: käsku ei ole
FRA: không tìm thấy lệnh
FRA: komanda nerasta
FRA: Kommando nicht gefunden.
FRA: kommandot finns inte
FRA: komut yok
FRA: nie znaleziono polecenia
FRA: níor aimsíodh an t-ordú
FRA: no se encontró la orden
FRA: no s'ha trobat l'ordre
FRA: opdracht niet gevonden
FRA: parancs nem található
FRA: perintah tidak ditemukan
FRA: príkaz nenájdený
FRA: příkaz nenalezen
FRA: команда не найдена
FRA: командата не е открита
FRA: 命令找不到
FRA: コマンドが見つかりません