cdfheatc: 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/cdfheatc - from package: cdftools

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

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