bootstrap-vz: command not found

Have You tried accessing the binary with the full path?

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/bootstrap-vz - from package: bootstrap-vz

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