vrpm: 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/vrpm - from package: util-vserver

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

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