vbregress: 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/lib/voxbo/bin/vbregress - from package: voxbo

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

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