cdde: 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/cdde - from package: cdde

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

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