mkbkv2hjvf: 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/mkbkv2hjvf - from package: vftool

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

Error in other languages:
mkbkv2hjvf: bevel nie gevind nie
mkbkv2hjvf: comandă negăsită
mkbkv2hjvf: comando não encontrado
mkbkv2hjvf: commande introuvable
mkbkv2hjvf: command not found
mkbkv2hjvf: käsku ei ole
mkbkv2hjvf: không tìm thấy lệnh
mkbkv2hjvf: komanda nerasta
mkbkv2hjvf: Kommando nicht gefunden.
mkbkv2hjvf: kommandot finns inte
mkbkv2hjvf: komut yok
mkbkv2hjvf: nie znaleziono polecenia
mkbkv2hjvf: níor aimsíodh an t-ordú
mkbkv2hjvf: no se encontró la orden
mkbkv2hjvf: no s'ha trobat l'ordre
mkbkv2hjvf: opdracht niet gevonden
mkbkv2hjvf: parancs nem található
mkbkv2hjvf: perintah tidak ditemukan
mkbkv2hjvf: príkaz nenájdený
mkbkv2hjvf: příkaz nenalezen
mkbkv2hjvf: команда не найдена
mkbkv2hjvf: командата не е открита
mkbkv2hjvf: 命令找不到
mkbkv2hjvf: コマンドが見つかりません