CDS: command not found

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/CDS - from package: quantlib-examples

You may install the required package with command apt-get install {package}

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