vuname: 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/vuname - from package: umview
/usr/sbin/vuname - from package: util-vserver

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

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