cdfbathy: 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/cdfbathy - from package: cdftools

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

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