cdfstdevts: 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/cdfstdevts - from package: cdftools

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

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