cdfstdevw: 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/cdfstdevw - from package: cdftools

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

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