vlvindex: 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/vlvindex - from package: 389-ds-base

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

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