nattribute: 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/sbin/nattribute - from package: util-vserver

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

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