vgrabbj: 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/vgrabbj - from package: vgrabbj

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

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