cdfokubo-w: 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/cdfokubo-w - from package: cdftools

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

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