whitedune: 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/whitedune - from package: whitedune

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

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