cdfmxl: 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/cdfmxl - from package: cdftools

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

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